Trail Running Calendar Ontario 2025-2026

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), with..

The Calabogie Peaks Trail Run, held in Calabogie, Ontario, features 10K and half marathon distances on August 24, 2025. Set at Calabogie Peaks, the tallest public ski resort in Ottawa, the race offers a challenging course of wooded singletrack mountain trails with technical sections and significant..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 26 August 2025.

The Haliburton Forest Trail Race is an annual ultra running event held at the Haliburton Forest & Wild Life Reserve in Haliburton, Ontario, Canada. Celebrating its 32nd year in 2025, the race offers multiple distances including 12K, 26K, 50K, 50 miles, and the signature 100-mile ultra. The course fe..

Apex ONEWAY is a trail running event held at Moonlight Beach in Sudbury, Greater Sudbury, Ontario, Canada. Scheduled for September 7, 2025, it features a unique point-to-point format where participants park at the finish line, take a shuttle bus to their start, and run back along scenic singletrack..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 9 September 2025.

Sugarbush Shenanigans is a unique ultrarunning event held at Sugarbush Vineyards & Winery in Hillier, Ontario. Participants can choose to run solo for 6, 12, or 24 hours, or join a relay team for the 24-hour race. The course features a flat, non-technical loop of approximately 3 kilometers, winding..

The Tobermory Trail Race will take place in Tobermory from Saturday 13 September 2025 to Sunday 14 September 2025. You can run between 5 and 42 kilometers.

The North Bay Road Race, held in Northern Ontario, offers premier road running events with distances including 5K, 10K, and a half marathon. The courses are scenic and mostly flat, featuring routes along the Lake Nipissing waterfront and the paved Kate Pace Way multi-use pathway. The 2025 race inclu..

The Monster of Mazinaw Trail Race is an ultramarathon event held at Bon Echo Provincial Park in Ontario, Canada. It features three race distances: 10k, 30k, and Canada's shortest ultramarathon at 43 km. The course offers a challenging mix of terrain, including wide groomed trails and technical, rock..

The Wolfpack Ultra Championship is a premier trail running event held in Hamilton, Ontario, Canada, showcasing the rugged and scenic trails of Conservation Halton. Scheduled for September 20, 2025, this ultra-running challenge offers a 50K solo race and a 50K team relay (5 x 10K legs), catering to b..

Trail and Ale 2025 is a running and walking event held at Blackwell Trails and the Howard Watson Trail in Sarnia, Ontario, Canada. Participants can choose between 5K and 10K distances, with options for live or virtual participation from September 1 to 20, 2025. The course heads north on the Howard W..

The Kincardine 7K Trail Challenge is an annual running event that invites participants of all ages to enjoy a scenic race starting and finishing at Station Beach. Scheduled for September 20, 2025, this event encourages both runners and walkers to take part. Prizes will be awarded to children under 1..

The Fort Henry 5km Cross Country Race, organized annually by the Kingston Road Runners Association (KRRA), takes place at Fort Henry Hill in Kingston. This well-established event features a 5km cross country race on a 2.5km loop course with small rolling hills, mostly grassy terrain, offering scenic..

The Willibald Pasture Dash is a cross-country style running event held at Willibald Farm Distillery & Brewery in Ayr, Ontario, Canada. Participants can choose between a 5km or 10km race, running loops of a scenic 2.5km pasture course. The event offers a rustic, country atmosphere with farm sights an..

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 23 September 2025.

Run Off-the-Grid is a rugged trail running event held in Mattawan, Ontario, set amidst the vibrant autumn colors. The race features a challenging 12.5 km loop through diverse terrain including single tracks, old logging roads, hills, steep climbs, rocky sections, creek crossings, a mud bog, and a sa..

The Albion Ascent Trail Race in Hamilton, Ontario, offers a scenic urban trail running experience through rivers, waterfalls, and forests. Featuring 5K, 10K, and 21K distances, the race combines paved paths, dirt trails, and technical sections, including the challenging Albion climb. The 5K and 10K..

The Blue Bully Ultra is Ontario's only three-day stage trail running race held at Blue Mountain Resort, set against the vibrant autumn colors of the Bruce Peninsula. Taking place October 3-5, 2025, it offers three race styles: The Stampede (a fast 5km with 400m elevation), The Drive (a challenging 5..

The UpRiver Running Fall Races, held in Thunder Bay, Ontario, offer a community-focused trail running event with distances of 50K, 25K, 10K, and a 2.5K Kids Trail Run. Starting and finishing at Kinsmen Park, the courses feature mostly single-track trails through scenic areas like Shuniah Mines, Casc..