Trail Running Calendar Ontario 2026-2027

Trail races in Ottawa on June 13 2026 offering 5 km 10 km and a looped half marathon on grass sawdust and trail surfaces with limited entries and participant medals.

A commemorative run honoring General Józef Haller and the Blue Army with races from 1 km to 10 km in Niagara on the Lake. The route follows the Niagara Parkway Recreational Trail and includes an event t shirt and finisher medal.

Trail running in Northumberland Forest on June 14, 2026 with four route options from a 3 km loop to a 24.6 km full route. The event is self supported and dogs are not permitted.

Two trail-and-road runs in Uxbridge : 10 km and 5 km : starting and finishing at Elgin Park. A fundraiser for the new Uxbridge Hospital, with online registration open Feb 1 to June 10, 2026.

Trail Hub in Uxbridge hosts a trail event with distances from 1 km to 50 km across Durham Region forest trails. Courses are supported by aid stations and include environmental measures and local donations.

A 15 hour 23 minute looped trail event on an approx. 3.7 km circuit at Marydale Park with a relay option for teams up to five, a single aid station per lap, and proceeds supporting the C.Y.O. One-to-One camp program.

A timed event in London, Ontario where all runners start together and try to get as far as possible from the common start within set times. Winners are those farthest away as the crow flies.

Trail running event in Thunder Bay, ON organized by Thunder Bay Nordic Trails and Fresh Air. Registration closes June 23, 2026, with cash payment and bib pick up on site. A free kids Mini Fun Run follows the main event.

A loop-format event on June 27, 2026 at Suncor Park/Wawanosh Wetlands featuring a 5K(ish), a 3 hour and a 6 hour race on a 2.35 km paved loop. All proceeds support Heaven’s Wildlife Rescue; parking is limited.

A looped backyard ultra at Tiffin Centre where runners complete a 6.7056 km lap each hour until one finisher remains. Multiple fixed-hour formats, on-site camping and refreshments are provided; the event is sold out.

A timed trail event at Kamview Nordic Centre offering solo 24 hour, 12 hour and 6 hour options, relay teams and a youth four hour race. The course is a 3.38 km loop with unlit sections and on site aid stations.

Trail running event at Kelso Conservation on June 27, 2026 offering 2K, 5K, 10K, MAX Elevation and a 20K relay. Courses include aid stations, professional chip timing and a post event village with awards.

An ultra trail running event at Limberlost Reserve near Huntsville on July 4, 2026, offering multiple distances, pre race sessions and community focused charity support.

Trail running event in Thunder Bay organized by Thunder Bay Nordic Trails and Fresh Air. Entry is cash on site with on site bib pickup, and a free kids mini fun run follows the main event.

A 5K obstacle fun run at Victoria Park on July 11, 2026 featuring over 25 obstacles, a large inflatable waterslide, mud pits and 2.5 million cubic feet of foam. Festival access and a free Kids FUN Zone are included with entry.

A night trail race at Batawa Ski Hill on July 11, 2026, with marked 7 km and 14 km courses. Headlamps are required, headphones are not allowed, and aid stations provide water and nutrition.

Trail and mountain runs at Blue Mountain Resort with multiple distances including 5K, 10K, 21K, 50K and a kids 1.5K. Courses include a timed 700 ft ascent and technical single-track sections, with a post-race patio, BBQ and music.

Trail races on the Toronto Bruce Trail near Milton Ontario with about 52 km, 27.5 km and 10 km options. Point-to-point courses use white blazes, include shuttle service and spaced aid stations.

A 5 kilometre obstacle run at Victoria Park in Kitchener on July 11 2026 with more than 25 obstacles and 2.5 million cubic feet of foam. The event includes a free kids fun zone, live DJ, food vendors and a licensed beer garden.

Six days, six stages and 60 kilometres in the Conestogo and Waterloo area. A staged event across road, trail, cross country and track with capped registration and time limits.