Trail Running Calendar Ontario 2026-2027

A 5 Peaks Trail Running event at Area 8 Conservation Area on a former limestone quarry, offering routes from 1 km to 24.2 km with mapped courses, aid stations and medals for top finishers.

Trail running event in Thunder Bay organized by Thunder Bay Nordic Trails and Fresh Air with cash payment and on site number pickup. Entry is 10 dollars per person or up to 30 dollars per family; a free kids mini fun run follows.

An informal 6 km trail run on Sugarbush Vineyards' private trails as part of the Friday Night Happy Hour series, with cupless policy, water at start/finish, manual timing and on-site registration options.

Mud Hero Ottawa on July 25, 2026 features a 6 km mud-and-obstacle course at Commando Paintball, a finisher medal, live DJ, food trucks and a beer garden 19+. Onsite photographer, bag check and paid parking are available.

A 5 km run at Boler Mountain on July 25 2026 featuring over 25 obstacles, large foam zones using 2.5 million cubic feet of foam, plus a kids area, DJ, food vendors and a licensed beer garden.

Trail races at Dundas Valley Conservation Area offer a 7 km loop with rolling hills and about 130 m elevation per lap, multiple distance and timed formats, and an elimination Gong Show.

A 5 km trail race at Sheila McKee Park on July 29, 2026 with a 2 km kids run for ages 5 to 12; the course is mostly flat but includes roots and rocks and registration includes chip timing and post race snacks.

An affiliated backyard ultra on August 1, 2026 at Eco Park in Arva featuring hourly 6.7056 km loops, a 67 runner cap and a Silver Ticket for the winner providing World Team Championship entry.

A trail running event in Thunder Bay with cash on site registration and race number pickup, a 10 dollar per person fee and a free Mini Fun Run for children afterward.

Two days of trail racing on the Beaver Valley section of the Bruce Trail with marathon, half marathon and a combined option. Technical, strongly marked courses with spaced aid stations and limited entries to protect the trail.

An obstacle event at Boulevard Lake in Thunder Bay offering separate courses for kids, adults and dogs. Distances and obstacle counts vary by category and obstacles are kept secret until the event.

Eight days and eight stages covering 80 km across road, trail, cross country and track in Waterloo Region from August 9 to 16, 2026, with kit pickup on August 8, on course fluids, a technical shirt and a finisher medal.

Rugged singletrack running near Pembroke with 10 km and 27 km options that start with a doubletrack warm up. Entry is limited to 150 runners and a free 3 km youth race is offered 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.

Trail races are held August 15 2026 at Kawartha Nordic Ski Club with distances from a kids run to a 52 km ultra. The event is part of the Outrace and Athletics Ontario Trillium series and emphasizes accessibility and environmental practices..

XTERRA Sleeping Giant takes place in Thunder Bay on 16 August 2026 offering off road triathlon, duathlon and trail runs across mountain bike trails and wooded singletrack.

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.

Trail races on August 22, 2026 at Devil's Glen Country Club offering 66.6 km, 33.3 km and 16.66 km courses on the Bruce Trail with major climbs, the Keyhole crawl, aid stations and support for the Bruce Trail Club.

A 24 hour trail running festival at Hardwood Ski and Bike in Oro Medonte on August 22-23, 2026. Teams of 8, 4, 2 or solo runners take turns on 8 km hourly laps while a camping village, food service and evening events run alongside.

A 5K obstacle run at Wesley Clover Parks on August 22, 2026 featuring more than 25 obstacles, foam zones and roughly 2.5 million cubic feet of foam. Entry details include a finisher medal, a buff and a low resolution finish photo.