Trail Running Races & Events in Ontario in 2026

When it comes to physical activity, fresh air and adventure, trail running is one of the most accessible and fulfilling ways to explore Ontario’s natural spaces. Not only does the sport present psychological and physical benefits, a deeper connection with nature, and a reduced risk of repetitive injuries, it also takes runners through incredibly diverse and stimulating terrain, offering an unbridled sense of freedom.

The province boasts the second-largest trail network in Canada, packed with over 80,000 kilometres of trails. So it’s no surprise Ontario is home to a long list of trail running events for racers of all calibres, all across the province. Whether you're looking for your first race or your next race, get inspired by this comprehensive list of trail running races in Ontario. Then mark your calendar, lace up and hit the trail in 2026.

Ongoing Runs

2026 – We Run The North: Virtual Running Challenge for 2026, Tobermory, ON

Participate in the Canada National Park’s Virtual 10 k Series by running 10 km at Bruce Peninsula National Park. These runs are all about doing things at your own pace; run, walk or hike your 10 km, then post your results to Race Roster. If you can't make it to the park in question, no problem; as long as you record your distance within the province, you’re good to go. Participants can even opt to complete 10 km runs in multiple provinces and will receive a custom medal and bib with each registration.

January 2026

17 – Polar Paws Winter Trail Run, Turkey Point, ON

Hosted by Crazy Cat Adventures, this 5-, 10- or 25 km winter trail run takes place on the beautiful singletrack trails of Long Point Eco-Adventures, on the shores of Lake Erie, where you can expect to do some climbing and scampering across bridges. What sets this event apart is that it is dog-friendly, so racers are welcome to run with their four-legged best friends.

February 2026

21 – The Hoot Winter Trail Series, Thunder Bay, ON

If three-season trail running doesn’t feel challenging enough, this winter run is definitely for you. Taking place in February, this series of runs almost guarantees that Thunder Bay’s rugged trails will be buried in snow. The races take place as semi-virtual events throughout January that require brave participants to use GPS tracking as they complete the 8.8 km trail. Following the initial races, there is an in-person race (weather dependent) on February 21, 2026.

April 2026

11 – Caledon Crusher, Caledon, ON

Crazy Cat Adventures organizes challenging 25-, 50- and 72-km trail runs on the Caledon Hills section of the Bruce Trail ending at Mono Centre, part of the Ontario Ultra and Trail Race Series.

18 – Spring WarmUp, Mansfield, ON

Shake off the cold that just won’t seem to let up with this spring trail run in the Dufferin County Forest near Mansfield, Ontario. The route consists of a 9-km loop, which you can run as many times as you wish!

18 – Foxtail Rail Trail Race, Dundas, ON

This race series is hosted on the well-maintained trails of the Dundas Valley Conservation Area, in remembrance of Paul Turkstra. The course is considered one of the fastest long-distance trail routes due to its primarily flat and accessible terrain. Competitors can enter 5-, 10-, 25- or 50-km distance races. Varying prizes are awarded to all runners who complete their event within the allotted time.

25 – The Pick Your Poison Trail Run, Barrie, ON

As the name suggests, this spring trail run offers competitors the option to run one loop for 12.5 km, two loops for 25 km or four loops for a 50 km race distance. Taking place in the Horseshoe Valley and Copeland forests near Barrie, the looped route offers runners the chance to run through off-road terrain as the season changes around you. With foliage not yet in full bloom, the spring weather can offer a cool, welcome breeze or a frosty gale as runners take on steep climbs and singletrack trails. Whichever race you compete in, participants leave with a fresh jar of honey, a longstanding race tradition.

26 – CMCC Backs in Motion, North York, ON

Presented by the Canadian Memorial Chiropractic College, Backs in Motion is an annual run that takes place on the trails at East Don Parklands in Toronto. This event is open to runners of all abilities; from weekend warriors to non-runners, running clubs and first timers, with 5- and 10-km options available. The organizers encourage all participants to fundraise or to donate to the Canadian Memorial Chiropractic College; a non-profit.

May 2026

2 – 5 Peaks Ontario Series, Halton, ON

5 Peaks is an exciting race series that holds races in five regions across Canada and welcomes runners of all abilities. From May to October, southern Ontario is host to five 5 Peaks events. The kick-off for the 2025 Ontario 5 Peaks series is at Kelso Conservation Area on the Niagara Escarpment. The event features a kid’s race (1 km) as well as Sport (6.9 km), Enduro (13.6 km) and Grit (20.8 km) categories.

2 – Rugged Raccoon Night Trail Race, St. Mary’s, ON

Turn your headlamps on and run through the night to complete this 25 km forested loop around the Wildwood Conservation Area’s reservoir lake. Shorter races occur during the day, while the 25 km and 50 km night races strategically begin before nightfall, allowing runners to get their bearings before running in complete darkness. The run asks participants to consider raising funds or donating to Ontario Nature.

2 – GEI Pure Grit Trail Race, Wiarton, ON

Taking place on the trails at the Georgian Bay Nordic Club, this race will take trail runners through some of the best terrain on the Bruce Peninsula. Race distances include 2.5 km, 5 km, 7.5 km, 15 km, 30 km, and a 6-Hour race that will replace the original 52.5 km.

3 – Spring Into Action Run, Oakville, ON

Runners can rejoice as they celebrate the return of spring with this trail run, taking place on the well-groomed gravel and dirt trails in Bronte Creek Provincial Park. In support of Food4Kids Halton, this race offers a 1 km fun run, a 5 km timed run, a 10 km timed run, and a 5 km family friendly walk/run that welcomes strollers, young ones and furry friends. After the run, stay for the medal ceremony and a pancake lunch.

9 – Seaton Scramble Trail Race, Pickering, ON

This race event takes runners to the Seaton Trail; a beautiful section of historic trails that follow Duffins Creek. The route is a well-marked 12.5 km out-and-back that traverses single track, double track, hills and water crossings, while offering stunning forest views. Runners can participate in 7-, 15-, 25- or 50 km trail races. There are also kids races (1-3 km) offered on the day of the event.

9 – Conquer The Canuck, Cambridge, ON

Run a well-maintained 6.25 km loop with sections of gravel, roots and wood chips and 93 m of climbing per loop. The race distances are 12.5 km, 25 km and 50 km, or you can compete in the 12-hour team relays. Register before January to access their early bird registration fee.

23-24 – Sulphur Springs Trail Race, Ancaster, ON

Passing by waterfalls and over rocky terrain, the Sulphur Springs Trail Race takes runners through Dundas Valley Conservation Area as they travel a challenging 20 km looped route. Runners will climb and descend 460 m of elevation per loop. Saturday’s races include 50-km, 100-km, 50-mile and 100-mile distances, while the Sunday races are distances of 10- and 20-km. This is the longest-running Ultra race in Ontario.

30 – Great Mansfield Outdoors, Mulmur, ON

Nothing washes down the heat of an early spring run like a beer festival. This trail race series has 5-, 10-, 25- and 50-km events taking place at the Mansfield Outdoor Centre. Following the races, participants will receive their medals along with a crisp beer mug so they can sample some of the area's craft talent. Learn more about the event at North of 89 Outdoors.

June 2026

6 – 5 Peaks Ontario Series, Milton, ON

The second event in the Ontario 5 Peaks trail race series will be held at Crawford Lake Conservation Area in Milton. The event features a kid’s race (1-3 km) as well as three distances: Sport (6.1 km), Enduro (12.3 km) and Grit (18.4 km) distances.

6 – 12 Mile Creek Trail Half-marathon, Niagara, ON

As the title suggests, runners are encouraged to participate in this half-marathon in support of the Rankin Cancer fund. This race takes participants along the Welland Canal, the Merritt Trail, Brock University’s trail systems and the Niagara Escarpment, as they race the full 21 km or a 7 km run that involves the latter half of the full run.

10-14 – The Ribbon 200, Bruce Trail, ON

Crazy Cat Adventures is organizing Ontario’s newest ultra marathon, featuring 100- and 200-mile routes on the Bruce Trail, between Caledon Hills, Dufferin Hi-Land and Blue Mountain. The route features seriously challenging terrain with up to 7,500 m in elevation gain.

13 – Rainbow Trail Run, Alliston, ON

Taking place at Earl Rowe Provincial Park, the Rainbow Trail Run is a perfect event for seasoned runners or those looking to get into trail running. The 12 km loop takes participants through a non-technical double wide track that covers grass, dirt and the odd bit of pavement. Take part in a single lap (12 km), the double (24 km), the four lap (48 km) or the five lap (60 km). This is a cup-less race event, so BYO bottle, flask, tumbler.

13 – Compass Run for Food, Orangeville, ON

This annual event offers runners the chance to participate virtually or in-person as they complete a 5 km or 10 km run along the well-groomed trails in Scenic Island Lake Conservation Area. There are also options for kid’s runs available at the beginning of the race day. 100 percent of the proceeds from the run go towards secure food initiatives in Dufferin County.

13 – Look Out Trail Race, North Bay, ON

With multiple distances and an event designed to suit all types of trail runners, this race offers a 7- and 14-km race as well as the feature event, a 21-km half-marathon. Located on North Bay’s Duchesnay Falls trails, this race takes place on a series of loops. The mixture of winding hills, forests, rocky terrain and elevation changes will keep any runner on their toes. Look forward to a stunning panoramic view at the top of the climactic Lookout Hill checkpoint.

14 – Run Forest Run, Northumberland, ON

Taking place on the Woodland Trail in Northumberland Country Forest, this race takes runners through challenging sections of single- and double-track as they compete in the Full Gump (24.6 km), the Bubba (9 km), the Lieutenant Dan (7 km), or the Jenny, a 4-hour looped run. Visit the Race Roster page for more details.

14 – Run for the Diamond, Uxbridge, ON

This trail race series is in its 15th year, and takes runners through some of Uxbridge’s popular trail networks as they compete in the 5- and 10-km races, as well as a kids dash (1 km). Net proceeds go to the Uxbridge Hospital.

20 – The Whole Enchilada, Uxbridge, ON

Presented by Green Newton Adventures and Trail Hub, this race location is just outside of Uxbridge on a 140-acre property that includes a series of incredible trails. This year, Trail Hub will host The Whole Enchilada; a trail race event that includes 1-, 4-, 8-, 25- and 50-km races. With something for everyone, this event aims to encourage people to gain an appreciation for the environment through outdoor events that challenge and inspire.

20 – Niagara Ultra Races, Niagara, ON

This Ultra race is an official Ontario Ultra and Trail Racing Series event that takes runners from Niagara-on-the-Lake to Niagara Falls. The trail is paved but offers spectacular views as runners run along the Niagara River for 10-, 21-, 42- or 50- and 80-km distance races.

27-28 – High Noon 24 Hr Trail Race and Relay, Thunder Bay, ON

This 24-hour race takes place at the Kamview Nordic Centre in Thunder Bay, and challenges runners to race solo, in a relay team of 4, or in a relay team of 8. The goal is simple: run as far as you can in the allotted time. The distance is all up to you. For more information on the 2025 event, check for updates on the Upriver Running website.

27-28– Utopia Backyard Ultra, Utopia, ON

Taking place at the Tiffin Centre for Conservation, the Utopia Backyard Ultra is a unique 2025 trail racing event. With options for races that range from 6- to 12 hours, racers will run as many laps as possible, or can choose to participate in the main event—an endurance race that pushes participants to run one 6.7 km lap every hour every hour on the hour until there is one finisher left. On race day, there will be limited snacks, drinking stations and options for runners to camp out after their run.

July 2026

4  – The Limberlost Challenge, Huntsville, ON

This is the 15th year for The Limberlost Challenge trail run. Hosted in the 10,000- acre Limberlost Forest and Wildlife Reserve, runners will cruise past lakes and through serene natural sections of forested trails as they tackle this technical route. Participate in a 14-, 28-, 42- or 56-km race on the 14 km looped course, featuring a burly 335 m of elevation change. Part of your race entry fee goes directly to Trails Youth Initiatives.

11 – Summit 700, Collingwood, ON

If the thought of massive climbs and descents appeals to you, this race at Blue Mountain Resort will be right up your alley. This epic race takes runners on a battle of mental and physical fortitude as they tackle a challenging single track route that leads them up and down a 200-m mountain climb. Race distances include 5-, 10-, 21 and 50-km. This year, runners looking to push the envelope can take part in the new 50 km Ultra and 50 km Ultra Relay. Learn more about this event presented by Solomon at Summit 700.

18 - 5 Peaks Trail Running, Milton, ON

The next installment in the Ontario 5 Peaks series takes place at the new Area 8 Conservation Area in Halton, and will offer races for all ages and ability levels. Runners will travel through the transformed natural area that once served as a limestone quarry. Kids races range from 1-3 km, while the Sport, Enduro and Grit race distances have yet to be announced. For updates and to register, check here.

25 – Tally In the Valley, Dundas, ON

The Dundas Valley Conservation Area is the perfect place to host this unique race with a deceivingly difficult elevation change of approximately 130 m per 7 km loop. Runners can choose from distance-based timed races or participate in the elimination-style event, called the “Gong Show”. Raise enough funds for Sick Kids Foundation and you can join for free.

August 2026

8 – Falling Water Trail Marathon, Eugenia, ON

Not for the faint of heart, this race is one of the most challenging trail runs in Ontario. “Slow and steady wins the race” is a mindset to maintain while carefully moving through some of the most treacherous portions of the Bruce Trail. This section of the trail, located in Beaver Valley, is named after the numerous scenic waterfalls and flowing creeks that runners will pass. Climbs, rollers and about 3,000 m of elevation change make competing in this half or full-marathon no small feat.

9 – Forest Lea Trail Run, Pembroke, ON

This run has a limit of 150 runners due to the course’s challenging singletrack, steep sections and technical obstacles. Participants can compete in a 10- or 25-km race through the beautiful Laurentian Mountains, northwest of Ottawa.

15 – Middle Path Trail Race, Peterborough, ON

Taking place on Kawartha Nordic Ski Club trails, this race promotes a holistic approach to running by providing athletes of all abilities the opportunity to compete in a fun and inclusive environment. The solo races offered are 2 km, 5 km, 26 km and 52 km, each winding through scenic Canadian Shield country. You can also enter the 13 km team race, to run collectively with a group of loved ones or friends.

22-23 – Timber 24, Barrie, ON

Welcome to the 24-hour trail running festival! Hosted by Hardwood Ski and Bikes, the festival challenges teams of 4 or 8 to complete a collective total of 192 km over the course of 24 hours. The trails are beautiful, but the sense of community you’ll experience here is even better, with a camping village, massage therapists, food and beverages, games, movies, campfires and more.

23 – Calabogie Peaks Trail Run, Ottawa, ON

The biggest ski resort in Ottawa, Calabogie Peaks Resort offers runners a unique opportunity to challenge themselves with a challenging event. Spartan Trail Racers will face single-track, technical terrain, climbs and great views as they participate in 10- or 21-km (half-marathon) events. For more information visit the Spartan website.

29 – Apex Adventure Challenge, Sudbury, ON

Join in the excitement of participating in an exciting adventure race in Sudbury. This race covers all bases, requiring racers to join as a group of 2, 3, or 4. It involves a mixture of biking, trail trekking and paddling. This may be a team event, but that doesn’t mean getting off easy, as each member must complete all of the race category events. While the fine details of the course aren’t revealed until race day, this non-relay style race is perfect for multifaceted trail runners looking to expand their race horizons in a beautiful setting.

September 2026

5 – 5 Peaks Ontario Series - Caledon, ON

The third race in the southern Ontario 5 Peaks series takes place amongst the dramatic scenery of Albion Hills on the banks of the Humber River. The event hosts three distances, including: Sport (7.5 km), Enduro (15 km) and Grit (22.5 km).

7 – Island Lake Classic, Orangeville, ON

Trail running young ones can take part in the 1 km kids races, while adults can take on the challenging 5 km roller coaster single-track loop, with elevation changes and forest views — or the longer 10 km loop. Taking place in Island Lake Conservation Area, racers will travel through groomed forest trails, over bridges and along the shores of Island Lake. The 5 km race offers a run/walk option for those looking to hit the trail without the added difficulty of speed.

11-15 – The Soo 200, Sault Ste. Marie, ON

Absolutely not for the faint of heart, the Soo 200 lives up to its name, challenging runners to tackle single track, double track, dirt roads, bushwhacking and beach running while they compete in a 200-mile (322 km) Ultra marathon. This is one of the most challenging races you can take part in, and it’s one of the only 200-mile race in eastern Canada. Runners will be rewarded with stunning coastal views of Lake Superior and the Algoma region. Visit the race website for more details including hospitality, EMS, aid stations, tracking and more.

12-13 – Haliburton Forest Ultra, Haliburton, ON

Established in 1993, this Ultra trail running event occurs in the densely forested Haliburton Forest and Wildlife Reserve. The area’s natural beauty is stunning and allows runners to experience scenic views of gem-like lakes while tracing winding hilly paths on 12-, 26- and 50 km, or 50- and 100-mile races. Learn more about the Ultra run here.

12-13 – Run The Edge, Tobermory, ON

Known for its stunning cliff views and crystal clear waters, Tobermory is home to the 2026 Run the Edge trail run. This event offers runners the chance to run along the Bruce Trail on 7-, 21- or 42-km races—or to travel to Flowerpot Island for a 5-km race. Trails will take runners through technical sections of rock, dirt, roots and steep elevation changes, but the view will remain just as gorgeous the whole time. The Flowerpot Island 5 km race entry includes a boat tour and a post-run breakfast. This event is in support of Tobermory Primary Place Child Care Centre.

19-20 – Sugarbush Shenanigans, Bloomfield, ON

This Ultra running race event takes place at Prince Edward County’s Sugarbush Vineyards and offers runners the chance to run on a well-maintained 3-km wooded trail. Runners can participate in 6, 12 or 24-hour solo events, or sign up with a relay team for the 24-hour race, to see how much collective distance you can cover. For no extra cost, participants are able to camp at the vineyard, so bring a tent and get ready for a great weekend.

19 – Monster of the Mazinaw, Cloyne, ON

With autumn colours ablaze, Bon Echo Provincial Park is a dream location for runners to participate in “Canada’s shortest Ultramarathon.” Whether running the 30- or 43-km race, participants will weave through sections of the backcountry as they encounter steep rocky pathways, winding climbs and difficult singletrack. Follow for updates at Happy Trails Racing.

27 – Run Off The Grid, Mattawa, ON

This trail race may be “Ontario’s race with the smallest footprint”, but it’s anything but a cakewalk! Run through remote Northern Ontario terrain, including the rugged Laurentian Mountains. Experience breathtaking wilderness with options to compete in 12-, 25- or 50-km races. These races are not for the faint of heart, with plenty of technical running. From gravel to sand and steep rocky sections, this epic adventure run is as challenging as it is rewarding. Stay up-to-date with information from Nature’s Harmony Ecolodge.

TBD – The Monarch Ultra, Peterborough, ON

This annual run is based around a Monarch Butterfly Festival and challenges competitors to complete a 10 km trail run at Millenium Park in Peterborough.

TBD – The Trail and Ale, Sarnia, ON

This trail running event is ideal for those who love trail running and craft beer. Runners will take part in a 5- or 10-km timed run, or a walk along the Howard Watson and Blackwell Trail systems. Then, get ready for an intimate craft beer festival as well as an after-party at Refined Fool Sports.

TBD – Albion Ascent Trail Race, Hamilton, ON

Believe it or not, Hamilton is home to a fantastic network of trails that will make any trail runner salivate. Waterfalls, rivers, urban areas and sections of the Bruce Trail make the Albion Ascent a stimulating way to experience the area. Check it all out in this chip-timed race with gravel, road, dirt and technical sections, and 10- and 21-km race options.

October 2026

3 – UpRiver Running Fall Race, Thunder Bay, ON

The UpRiver Running Fall Race is a race series that invites trail enthusiasts from all walks of life to participate. The series offers 10-, 25- and 50-km distances on singletrack trails in Thunder Bay. The 10-km race participants complete one loop, while the 25-km racers will follow a 12.5-km out-and-back trail between Kinsmen Park and the Cascades Conservation Area. For the 50-km race, runners will run the 12.5 km out-and-back trail four times. A post-race social helps you connect with Thunder Bay’s vibrant trail running community.

3 – 5 Peaks Ontario Series, Brampton, ON

The fifth and final event in the southern Ontario 5 Peaks series will be held at Heart Lake Conservation Area in Brampton. The area’s namesake is a spring-fed kettle lake, shaped like a heart. The event features a kids race as well as three distances: Sport (7.5 km), Enduro (14.6 km) and Grit (22.5 km).

10 – Sticks N’ Stones, Hamilton, ON

In support of Oceana Canada, this race takes place in the vast trail systems of the Christie Lake Conservation area near Hamilton. Fall running in this area means fallen leaves, clear views through the woods and rugged terrain. Run the 5-, 10-, 26- or 53-km distances, or recruit a team for the 53-km relay. Follow along with Happy Trails Racing for more updates.

11 – Turkey Gobbler Trail Run, Sudbury, ON

Hosted by Sudbury Rocks!! Running Club, the Turkey Gobbler Trail Run offers runners a chance to get out for a pre-Thanksgiving race. Designed to be an all-inclusive event, there are races for every skill level and runner. Participate in the 8 km trail walk/run, take it easy with the 3.5 km walk/run, or get the little ones out with the 1 km kids walk/run. Taking place at the Walden Cross Country Ski Club, this event is a great way for the whole family to experience some fall running.

17-18 – The Wawa Trifecta, Wawa, ON

Back for its fourth year, the Wawa Trifecta is a 2-day event including a 6-km trail run, a 1.5-km climb run and a 21-km half-marathon, all on rugged Northern Ontario trails. Get ready for a close-knit, small-scale event with great camaraderie and fantastic terrain—with the potential for seriously foul (read: memorable) autumn weather.

17 – Phoenix Trail Race, London, ON

This running series takes place in the Fanshawe Conservation Area. It boasts mild elevation change, dirt sections and singletrack, and offers runners a chance to run the 25 km loop once or twice for a 50 km run. This mid-fall challenge allows competitors to enjoy some of the best cool-running weather in Ontario.

17 – Creemore Vertical Challenge, Creemore, ON

Stay back from the cliff’s edge on this challenging trail run that takes runners on a mixture of gravel roads and technical single and double track in 14-, 27.5-, 55- or 80-km trail races. Put yourself through your paces with this challenging run, then enjoy the ice-cold cans of Creemore Springs beer that are offered to competitors at the end of the race.

November 2026

7 – The Beav Trail Race, Milton, ON

Run in November’s unpredictable weather as you race along groomed trails with tricky technical sections scattered throughout in Hilton Falls Conservation Area. Choose between 10-, 25- and 50-km trail races that take in the scenic waterfalls of the Beaver Dam Trail. Run, have fun and get your hands on coveted Beav Trail merch. Learn more by following along at Happy Trails Racing.

15 – Fat Ass Trail Run, Battawa, ON

Since 2003, runners have gathered in the Battawa area of southeastern Ontario to participate in one of the province’s largest trail race events. Experience rock, mud, single-track trails and sometimes even snow in this off-road paradise, with options to compete in 5.5-, 7.5-, 10-, 17.5-, 25- or 50-km distance races, or a 6-hour timed run. The race atmosphere is inclusive and warm despite the cold shoulder season weather.

21 – Race Against Time, Hamilton, ON

This grassroots “last man standing” style of race is held at Bayfront Park on Lake Ontario. The route consists of laps of a 1-mile loop at a steadily increasing pace. It promises to be a fun event with the potential for some serious suffering. 

28 – Chill Session, Mulmur, ON

This run, described as “a celebration of hoodies, trails, chili and beer” will take place at the Mansfield Outdoor Centre, and offers trail runners the perfect opportunity to get another race in before the southern Ontario landscapes change for the season. Races include a 1-km kids race, the 5-km Cool and the 10-km Chill. Race on single track with 130- to 220 m of elevation change, before enjoying some chili, beer, a complimentary hoodie and perhaps a medal.

TBD – Frost Country 6k, Ottawa, ON

This open race offers a unique experience for runners to participate in the Canadian Cross Country Championships. Anyone who wants to try their hand at cross country running can take part in this cold weather 6-km race on gravel, woodchip and grass trails at Mooney’s Bay.

Make Your 2026 Race Plans Now

From cruisey trails, epic climbs, beautiful scenery and the challenge of mud- or snow-covered trails, Ontario features a full complement of trail running races for solo competitors or teams, all year long. Whether you’re a competitive or a casual runner, there’s an Ontario trail running event for you. Make your 2026 trail running plans now and get training for an epic season. 

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