Trail Running Calendar Ontario 2025-2026

The Utopia Backyard Ultra 2025 is a unique endurance running event held from June 27-29 at the Tiffin Centre for Conservation in Utopia. Participants run a 4-mile (6.7 km) loop every hour on the hour until only one runner remains. The event offers a main race and optional 12-hour and 6-hour sub-even..

The Sarnia Sole Burner is an annual running event held at Suncor Park/Wawanosh Wetlands in Sarnia, Ontario. It features three professionally timed loop races on a paved 2.35 km course with some hills, including a 5K run, a 6-hour endurance race, and a 12-hour endurance race. A kids' 1K fun run is al..

The Limberlost Challenge is a trail running event held at the Limberlost Forest and Wildlife Reserve in Huntsville, Ontario, Canada. The course features challenging terrain, including steep inclines, wetlands with beaver dams, creeks, and mud holes, offering a mix of technical sections and faster tr..

Summit 700 Trail Runs is an exciting trail running event taking place at Blue Mountain Resort in Ontario. Scheduled for July 5, 2025, participants can choose from various distances, including 5K, 10K, 21K, and a new 50K Ultra and Relay option. The courses feature challenging terrain with a 700-foot..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 8 July 2025.

Dark & Dirty is a night trail running event held at Batawa Ski Hill in Batawa, Ontario, Canada. The race offers two distances, 7km and 14km, on scenic trails featuring natural obstacles such as rocks, roots, stumps, and hills. The course is well marked and designed to enhance participants' trail run..

The First Blaze Trail Race 2025 is a unique trail running event held on July 12, 2025, at Kelso Conservation Area in Milton, Ontario, Canada. It features three challenging point-to-point races along the Toronto section of the Bruce Trail: a 50km (51.8km actual) race for intermediate runners, a 27.5k..

XTERRA Conquer the Crater is an off-road multi-sport event held in Greater Sudbury, Ontario, Canada, as part of the XTERRA World Tour. Scheduled for July 19-20, 2025, it features a variety of races including full and sprint distance off-road triathlons, duathlons, and trail runs ranging from 1K yout..

The SOO 200 is Eastern Canada's only 200-mile ultramarathon, held in the Sault Ste. Marie and Algoma region of Ontario, Canada. Celebrating the rugged Canadian Shield terrain and stunning coastal landscapes, the race challenges athletes with a diverse course featuring single track, double track, dir..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 22 July 2025.

One More Hour is a welcoming trail running event held at Sugarbush Vineyards in Hillier, Ontario, as part of the Friday Night Happy Hour series. The course features approximately 6 kilometers of flat, private vineyard trails, offering a leisurely and community-focused running experience suitable for..

The Persistence Backyard Ultra is a challenging endurance running event held at Eco Park in Arva, Ontario, Canada. Participants run a 6.7056 km loop every hour, repeating it until only one runner remains, testing their persistence and stamina. The course features a runnable mix of crushed stone trai..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 5 August 2025.

The Middle Path Trail Race, held in Kawartha Lakes, Ontario, offers a variety of distances including 26 km, 52 km, a 13 km team event, as well as 5 km and 2 km races over a weekend in August. Part of the Outrace Series and Athletics Ontario Trillium Running series, the event emphasizes accessibility..

XTERRA Sleeping Giant is an off-road multisport event held in Thunder Bay, Ontario, at the head of Lake Superior. Set amidst unique mesa rock formations and Boreal forest, the event offers a variety of races including full, sprint, and super sprint off-road triathlons, a full-distance duathlon, and..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 19 August 2025.

The Last Hour is an 8km trail run held at Vanderwater Conservation Area in Thomasburg, Ontario, as the final race in the Friday Night Happy Hour Series. The course features gently rolling terrain through beautiful pine groves, old boulder fields, and alongside the Moira River, with wide trails ideal..

The Devil's Key is a challenging trail running event held at Devil's Glen Country Club in Duntroon, Ontario, Canada. Featuring three race distances—66.6 km (The Beast), 33.3 km (The Half Beast), and 15 km (The Mini Beast)—the course is known for its steep climbs and technical descents, including mul..

Timber24 Relay is a 24-hour trail running festival held at Hardwood Ski and Bike in Oro Medonte, near Barrie, Ontario. Teams of 4 (ultra) or 8 runners collectively cover 192 km by each member running an 8 km lap every hour for 24 hours. The event features a lively atmosphere with an on-site camping..

Lines and Loops at Harold Town Conservation Area is a trail running event held near Peterborough, Ontario, celebrating 31 years of conservation and the land donation by artist Harold Town. Participants can choose from multiple distances: a 6K lap, an 18K (3 laps), or a challenging 30K (5 laps) throu..