Trail Running Calendar Ontario 2026-2027

Experience one of the fastest trail races in Canada on the flat and groomed paths of Dundas Valley. Choose from distances between 5 km and 50 km in this scenic community event.

Experience a technical trail race through Ontario's beautiful Copeland Forest with 12.5 km, 25 km, and 50 km options. Support local mental health initiatives while tackling challenging climbs and unpredictable spring conditions.

A running event at Point Pelee National Park on April 26, 2026 offering 5K, 10K, 15K and kids races. Courses mix road and trails and proceeds support local charities.

Trail race at Wildwood Conservation Area with day and night options and distances of 10 km, 25 km and 50 km. The course features lake views, variable terrain, staffed aid stations and required lighting, with proceeds supporting Ontario Natu..

A multi‑distance trail running event at Kelso Conservation Area on May 2, 2026, with courses from a free 1 km kids event to a 21 km Grit race. Multiple categories and variable fees, plus fundraising options.

Trail race in Hepworth, Ontario on May 2, 2026 offering multiple distances and a six hour timed event. Proceeds support the Georgian Bay Nordic youth ski team.

A team-based wilderness adventure run in Parry Sound on May 2-3, 2026. Teams choose checkpoints to score points in three hour or six hour formats, with optional training and a Team Canada navigation challenge.

A rural run at the historic Ecotay farm in Perth ON offering 6K and 10K loop courses with spring scenery, a breakfast sandwich, a beverage, a commemorative medal and post-race entertainment.

Trail race in Cambridge Ontario on May 9, 2026 offering 12.5 km, 25 km, 50 km, a 12 hour event and a team relay. Races use repeated 6.25 km loops and the event includes fundraising for KidsAbility.

Seaton Scramble Trail Race offers distances from a 1K kids run to a 50K double loop on the Seaton Trail in Pickering. The marked course includes single and double track, a creek crossing, stairs and aid stations.

An 8 km trail race at Goodrich-Loomis Conservation Area as part of the Happy Hour series, featuring hills, rocks and mossy log bridges. Water at start and finish, manual timing, and no placement awards.

A chip timed 4 km on Cambridge’s Mill Run Trail on May 16, 2026. The certified crushed gravel course is an out and back with parking at Riverside Park and reusable chip timing.

Spartan obstacle weekend at Brimacombe near Toronto on May 23 and 24, 2026. Events include a 5 km with 20 obstacles, a 10 km with 25 obstacles, a kids race and a four hour Hurricane Heat.

Experience Ontario oldest ultra trail event in the scenic Dundas Valley. Run through Carolinian forests on a challenging multi loop course with distances ranging from 10 km to a WSER qualifying 100 mile solo race.

A fundraising trail event at Bechtel Park offering 5K and 2.5K options with or without dogs plus a 200 m Pup Run. Fundraising tiers unlock event apparel and swag.

Test your limits on the single track trails of Dufferin County Forest with distances ranging from 5 km to a 100 km ultramarathon available for solo runners and relay teams.

A Backyard Ultra in Midland on May 30, 2026 where runners complete a 6.706 km loop each hour until one runner remains. Main entry is sold out, and finishers receive a handcrafted wooden medal.

A 100 miles route circling the City of Hamilton through six communities. Finish within 40 hours for a Gold buckle or complete the distance during June to receive a Pewter buckle.

Experience the beauty of Crawford Lake Conservation Area with trail races ranging from 1 km to 18.4 km. Run through historic grounds featuring reconstructed Indigenous Longhouses in this professional cup free event.

An annual St. Catharines event supporting the Niagara Rankin Cancer Run, featuring a historic half marathon along 12 Mile Creek Trail and a 7 km trail race using the latter part of the course.