Ontario
Trail Running Calendar Ontario 2026-2027
Explore the best trail runs in Ontario for 2026-2027! Our updated list features 119 exciting trail runs across the region. Find your next trail run in Ontario below and join the trail community at these great events!
September 2026
A trail running event in Thunder Bay organized by Thunder Bay Nordic Trails and Fresh Air. Cash payment and evening number pickup are available and a free Kids Mini Fun Run follows the main event.
October 2026
Trail races at Heart Lake Conservation Park around a spring-fed kettle lake, with distances from 3 km to 22.5 km and aid stations on course.
A backyard ultra in Manotick on October 3, 2026, focused on repeating loops and mutual support among runners. The event highlights community connection and the local gathering place around 692 Coffee & Bar.
Trail running in Thunder Bay with a 2.5 km kids course plus 10 km 25 km and 50 km options on mostly single track with aid stations.
A family-friendly event on October 3 2026 offering a 2 km walk or 5 km run to raise funds for Rural Response for Healthy Children.
Family and dog friendly fundraiser in Harrison Park supporting the Grey Bruce Animal Shelter with about 1 km and 3.5 km routes.
Trail race in Parkhill on October 3, 2026 featuring a 26 km point to point plus 11 km, 7.7 km and 3.3 km loop options with shuttles and aid stations.
Trail and ultra races at Warsaw Caves on October 4, 2026, with distances from 1 km to 50 km, chip-timed and supporting CMHA.
Trail event on October 4, 2026 at Pinehurst Lake with a 12.5K loop and 25K, 50K and 50K relay options. Mostly natural singletrack around forest, lake and meadows with aid stations and a cup free policy.
Trail running event in Thunder Bay with on-site cash registration, a $10 per person fee and a free Kids Mini Fun Run held afterward.
Trail race at Christie Lake Conservation Area on a 5.3 km loop with distances from 5 km to 53 km and aid stations on every loop.
A trail race and family run in Fenelon Falls on October 10, 2026, offering 1 km, 5 km and 10 km distances while raising funds for Women's Resources.
Family-focused Turkey Trot in Cobourg with 5 km, 2.5 km, 1 km kids run, activities, costumes and fundraising for the YMCA Strong Communities Campaign.
Thanksgiving Monday runs at Springbank Park with 6.5 km, 2 km and a Kiddy Trot plus donations collected for the London Food Bank.
Obstacle-course weekend at Blue Mountain with Sprint 5 km, Super 10 km, Beast 21 km and a Trifecta medal for completing all three.
Trail races at Fanshawe Conservation Area offering 25k one loop and 50k two loops on a mixed surface reservoir trail. The event includes aid stations, timing chip, finisher medal and a planned burgundy unisex half zip.
Trail event at Long Sault Conservation Area with 7K, 14K, 21K, a 6 hour loop event and a 2K kids run, one aid station and paid parking.
A mixed gravel road and trail loop in Creemore offering 14K, 27.5K, 55K and 80K/50M options with multiple laps, aid stations, finish items, and photography provided after the race.
Looped trail race at Camp Heidelberg in Waterloo offering 5 km to 50 km options, sanctioned by Athletics Ontario and timed by Chiptime Results.
October 17 2026 trail event with 5 km and 10 km races plus 1 km kids race and Survivor walk supporting the Brain Injury Association of Niagara.