Trail Running Calendar Ontario 2026-2027

Trail races at Sheila McKee Park on July 29, 2026: a 5 km course with natural terrain and a 2 km kids run, timed with chip results.

Backyard ultra at Eco Park in Arva ON on August 1 2026 with a 3.36 km loop repeated twice each hour, capped at 67 runners and affiliated with Big Dog's Backyard.

Open water swims, an individual and relay swimrun, and 5K and 10K trail runs along the Welland Recreational Canal on August 2, 2026.

Trail event at Petawawa Golf Course offering 5 km, 10 km, a relay 3 x 5 km and a kids 2.5 km loop as part of the Water and Dirt Festival.

An in-person timed run in Ottawa offering 5K and 10K distances with awards and snacks. Part of registration supports OrKidstra to help children access instruments and after-school programs.

Trail run in Thunder Bay on July 21, 2026 with on site cash entry, a family price cap, and a free kids mini fun run afterward.

Relay race in Toronto where pre-formed mixed gender teams of four run as many laps as possible in 45 minutes; top five teams advance to a final decided by fastest laps.

Trail marathon and half marathon in Eugenia ON along the Beaver Valley Bruce Trail, featuring steep climbs, rocky technical terrain and scenic views.

50 km team relay in 8 sections from North London to Broken Rail Brewery with proceeds supporting Ronald McDonald House Charities.

Survival-style obstacle event at Boulevard Lake with categories for kids, adults and dogs, varied terrain and undisclosed obstacles.

A two day trail event at Stokely Creek Lodge featuring a 1 km hill climb, 5 km and 25 km trail races, plus family activities such as a kids race, scavenger hunt, lodge dinner and a nighttime summit hike.

Eight staged days in Waterloo region combining road, trail, cross country and track into a cumulative 80 km multi-discipline event.

Trail races at Forest Lea Trails on August 9, 2026, with 10 km and 27 km on rugged singletrack, plus a free 3 km youth race for ages 15 and under.

Trail running event in Thunder Bay with cash on site registration and evening bib pickup. Start and finish are in the stadium area near Kamview Nordic Centre and a free kids mini fun run follows the main event.

Evening 5 km trail series in Ottawa across four Tuesdays from May to August, CA$10 per race with post race refreshments and a quilt draw for full series participants.

XTERRA Sleeping Giant in Thunder Bay, Ontario on Aug 15 to 16, 2026 features off road triathlon, duathlon and trail runs at Boulevard Lake and Kinsmen Park.

Join a community focused trail race at Kawartha Nordic featuring distances from 2km to 52km. Experience a professionally sanctioned event that prioritizes environmental sustainability and athletic accessibility.

Community driven trail running at Kivi Park on August 16, 2026, offering distances from a kids run to a half marathon. Fundraising supports the Miles Against Cancer Fund.

The Last Hour is the final Happy Hour Friday Night Series race, an 8 km trail run at Vanderwater Conservation Area featuring pine groves, boulder fields and riverside trails. No aid stations; parking fees apply.

Three trail distances on the Bruce Trail at Devil's Glen featuring steep climbs, a keyhole crawl, local gels and frequent aid stations.