Ontario
Trail Running Calendar Ontario 2026-2027
Explore the best trail runs in Ontario for 2026-2027! Our updated list features 82 exciting trail runs across the region. Find your next trail run in Ontario below and join the trail community at these great events!
June 2027
Trail event on the Bruce Trail around Glen Haffy with multiple distances, technical singletrack, frequent aid stations, and set time limits.
MUDGIRL Oshawa, June 12 and 13 2027, is a women focused mud run under 5 km with 17 plus obstacles, a race kit, rinsing stations and a minimum age of 7.
Trail race of about 6-8 km at Goodrich Loomis Conservation Area near Brighton, ON; manual timing, cupless, organized by Dirty Soles as part of a Happy Hour series.
Trail running at Trail Hub in Uxbridge with distances from a free 1 km kids run to a 50 km race, marked trails, aid stations, and sustainability measures.
Outdoor mud obstacle course in Carleton Place on June 26, 2027 featuring a 6 km route, 15+ obstacles, an All Day Pass for unlimited runs and a finisher medal.
July 2027
A multisport day at Kelso Conservation Area near Milton featuring Swimrun (10K and 20K), open-water swims (1K, 3K, 5K) and 7.5K and 15K trail runs.
Obstacle course fun run in Victoria Park with over 25 obstacles, a giant inflatable waterslide, lots of foam and a free kids zone for ages six and under.
Night trail race in Batawa offering 7K, 14K and 21K on rocky marked trails with mandatory headlamps and cupless aid stations.
Utopia Backyard Ultra at Tiffin Centre uses one-lap-every-hour rules until one finisher remains, with 6 hour, 12 hour and full BYU options.
A 5K foam run at Victoria Park in Kitchener with 25+ obstacles, about 2.5 million cubic feet of foam, a kids zone, live DJ and festival amenities.
Trail and mountain races at Blue Mountain Resort on July 10, 2027, from a 1.5K kids race to a 50K ultra with relay and post race awards.
A 5 km obstacle-course fun run on July 17, 2027 at Wasaga Beach with foam, inflatables, food vendors and a free kids zone for young children.
Trail races at Area 8 Conservation Area on former quarry terrain, with kids and adult distances, cup free support, and mapped courses along the escarpment.
A casual 6K trail run at Sugarbush Vineyards in Hillier on July 23, 2027, part of the Happy Hour series and organized by Dirty Soles.
A 5K course at Boler Mountain with 25+ obstacles, large foam zones, a Kids Fun Zone, live DJ, food vendors and on-site festival amenities.
Women focused mud run under 5 kilometers with 17 plus obstacles at Wesley Clover Parks in Ottawa on July 24 and 25, 2027.
A repeated loop backyard ultra at Eco Park Arva on July 31, 2027, requiring hourly completion of a 6.7056 kilometre circuit, capped at 68 runners.
August 2027
Experience 25 obstacles including the worlds largest inflatable waterslide and 2.5 million cubic feet of foam at this 5 km fun run in Ottawa
Shared obstacle event at Boulevard Lake Park on Aug 7, 2027 with Adults, Kids and K9 challenges and early bird pricing until Nov 30, 2026.
An 8-day multi-stage running event in Ontario offering a 160 km Ultimate and an 80 km Sport option across road, trail, track and time-trial stages.