Trail Running Calendar Ontario 2026-2027

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..

Trail races at Kelso Conservation Area include kids 1 km and 3 km plus 6.9 km, 13.8 km and 20.6 km options. The cup-free event provides water at start, finish and aid stations and offers optional wooden finisher medals.

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.

Two days of trail racing in Ancaster on a 20 km loop offering distances from 10K to 100 miles. Four aid stations, a cup free policy, and status as a Western States 2027 qualifying race.

Trail running event in Thunder Bay on May 26, 2026 with on-site cash payment and bib pickup. Entry is $10 per person or $30 per family, and a free kids mini fun run follows the main event.

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.

Trail races from 5 km to a new 100 km solo or relay at Mansfield Outdoor Centre, with cupless aid stations, on-site camping and race services.

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.

A trail race in the 5 Peaks Ontario series at Crawford Lake Conservation Area on June 6, offering multiple distances and on site Indigenous longhouses with educational programs. Practical event details include aid stations and a cup free po..

A St. Catharines trail event supporting the Niagara Rankin Cancer Run, offering a 21.1 km half marathon and a 7 km trail race that use the 12 Mile Creek Trail and include a descent of the Niagara escarpment.

A community trail race in Streetsville with a 1 km fun run and a chip timed 5 km along the river. Part of proceeds support Camp Wanago.

Community fundraiser in Caledon East offering 25 km 50 km and 100 km cycling routes plus 5 km and 10 km trail options. Organized by CMHA Peel Dufferin to raise funds for local mental health and addictions services.