Trail Running Calendar Ontario 2025-2026

Conquer The Canuck is Cambridge, Ontario's longest trail race, held at Shades Mills Conservation Area. The event offers multiple distances including 12.5 km, 25 km, 50 km, and a 12-hour race, as well as a 12-hour relay for teams of 2-4 runners. The course consists of loops of approximately 6.25 km e..

The First Hour is a welcoming trail running event held at the scenic Goodrich-Loomis Conservation Area in Castleton, Ontario, Canada. As the opening race in the Friday Night Happy Hour series, it features an 8-kilometer course with varied terrain including hills, rocks, roots, and mossy log bridges,..

Coach D's Backyard Ultra and Trail Race is held at Ken Reid Conservation Area in Lindsay, Ontario. The event offers three race options: 6-hour, 12-hour, and 24-hour backyard ultras. The 24-hour race features a 6.7 km trail loop that runners must complete every hour, starting with a cowbell signal.Pa..

The Sulphur Springs Trail Race is a popular annual event held in the Niagara Escarpment's Dundas Valley Conservation Area in Ontario. It features a variety of race distances, including 10K, 20K, 50K, 50 Miles, 100K, and 100 Miles, along with team relays. The race course is a 20K loop that combines g..

H+P This May Be Loopy Ultra is an ultra running event held in Waterloo, Ontario, Canada, featuring a challenging 8K loop course. The event consists of two phases: the first requires participants to run 8K every hour for five hours, totaling 40K, with flexible start times within each hour. The second..

Great Mansfield Outdoors 2025 is a trail running event held at the Mansfield Outdoor Centre and Dufferin County Forest in Mulmur, Ontario. The race offers multiple distances: 50K, 25K, 10K, and 5K, with courses primarily on single-track trails featuring varying elevation gains from 130m to 1000m. Th..

The 36th annual Twelve Mile Creek Trail Half Marathon & 7k Cancer Run takes place in St. Catharines, Ontario, supporting the Niagara Rankin Cancer Run. The half marathon covers 21.1 km (13.1 miles) along a historic route featuring the first Welland Canal, the Merritt Trail, and a challenging ascent..

The International Hallers' Run is a commemorative running event held in Niagara-on-the-Lake, Ontario, Canada, celebrating the historic ties between Poland and Canada. The race honors General Józef Haller and the Blue Army, symbolizing Polish-Canadian friendship and shared history. The event features..

The Ridge Runner is a summer trail running event held in the Hamilton area, Ontario, Canada, offering a variety of race distances including a 1K kids race, 5K, 10K, and a 21K half marathon. Participants experience rugged, scenic ridge trails with technical sections, climbs, and forested paths that s..

The Northumberland Run Forest Run will take place in Northumberland County from Sunday 8 June 2025 to Friday 13 June 2025. You can run between 7 and 24 kilometers.

The Kamview / Fresh Air Trail Run will take place in Thunder Bay on Tuesday 10 June 2025.

The Rainbow Trail Run in Alliston, Ontario, is a trail running event held at Earl Rowe Provincial Park featuring a scenic 12K loop around the park. The course is mostly double-wide trails with grass, dirt, a bit of pavement, and bridge crossings over Earl Rowe Lake, including a short climb to a look..

The High Noon 24Hr Trail Race & Relay takes place at Kamview Nordic Centre in Thunder Bay, Ontario. Participants can choose from a 24-hour solo race, relay teams, or a youth 4-hour solo event for those 15 and under. The course features a 3.38 km cross-country trail loop with scenic views, some secti..

The Trash Dash Fun Run is an outdoor running event held at the Simcoe County Forest Trails in Midhurst, Ontario. Scheduled for June 14, 2025, the event offers participants the choice of 5 km or 10 km trail runs. It promotes a fun and active atmosphere focused on environmental awareness, encouraging..

The Look Out Trail Race, hosted by North Bay Road Race, returns for its second year on June 14, 2025, featuring distances of 7km, 14km, and a Half Marathon, along with a Kid's Race. Set in the scenic Duchesnay Falls/Campus trails in North Bay, participants will navigate a challenging course with roc..

The Whole Enchilada is a trail running event held at Trail Hub in Uxbridge, Ontario, known as Canada's Trail Capital. The race offers multiple distances, including a challenging 50 km course featuring significant elevation gains and technical terrain through Durham Forest, Walker Woods, and Glen Maj..

The Farthest is a unique endurance running event held in London, Ontario, Canada, where participants aim to run as far away as possible from a common starting point within a set time limit. The race offers three categories: an 8-hour "Farthest," a 4-hour "Half-Farthest," and a 2-hour "Quarter-Farthe..

The Boomerang Trail Run is a customizable trail running event held at Batawa Ski Hill in Batawa, Ontario, Canada. Participants challenge themselves on a 7km+ looped trail, running as many laps as possible within 2, 4, or 6 hours. The course features varied terrain including hills, rocks, roots, mud,..

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

The Uxbridge Run for the Diamond is a scenic running and walking event held in Uxbridge, Ontario, starting and finishing at Elgin Park. It features two main distances: a 10K and a 5K, both taking participants through winding trails and roads in the area. The event also includes a 1 km Kids Dash.Limi..