Ontario
Trail Running Calendar Ontario 2026-2027
Explore the best trail runs in Ontario for 2026-2027! Our updated list features 115 exciting trail runs across the region. Find your next trail run in Ontario below and join the trail community at these great events!
August 2026
Trail run in Thunder Bay on August 11, 2026 with on-site cash entry ($10 per person, $30 family max) and a free kids Mini Fun Run held afterward.
Evening 5 km trail runs in Ottawa from May to August with a small fee, postrace refreshments and a quilt draw for those in all four events.
Trail races on a 13 km loop at Kawartha Nordic, with options from a kids run to a 52 km ultra.
Off-road triathlons and trail runs around Thunder Bay's mesas and boreal trails, offering 28 XTERRA World Championship qualification spots.
A community driven trail running event at Kivi Park on August 16, 2026 offering multiple distances and fundraising for the Miles Against Cancer Fund.
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 the Bruce Trail near Duntroon with 16.66 km 33.3 km and 66.6 km routes featuring steep climbs technical terrain and a required skeleton key.
A 24 hour team trail relay at Hardwood Ski and Bike where teams cover 192 km in hourly 8 km laps with camping, food service and evening activities.
A 5 km obstacle-course fun run at Wesley Clover Parks with over 25 obstacles, foam, a free kids zone and festival-area vendors and a beer garden.
Obstacle race weekend at Calabogie Peaks near Ottawa offering Sprint, Super, kids races, Hurricane Heat formats, and hilly technical trail terrain.
A mud and obstacle run at Albion Hills with a 6 km course, finisher medal, live DJ and food trucks. An all day pass lets participants run multiple times and the event is open to ages 12 and up.
Annual family fitness challenge at Gibbons Park with adult, kids and K9 courses featuring obstacle counts and mandatory harness rules for dogs.
Trail races at Calabogie Peaks on August 23, 2026 feature wooded singletrack, technical sections and lake views. Distances include 10K and half marathon with average conditions around 18ºC and 272 m altitude.
An obstacle race in Cloyne Ontario on August 29 2026 featuring a 3 km loop, a kids challenge and a 2 hour Endure to complete as many loops as possible. The event includes a festival area, food vendors and cash prizes.
24 Hour To Empower in Barrie features 5 km loops each hour for 24 hours to reach 120 km while raising funds for the Women & Children's Shelter of Barrie.
A foam filled 5K with 25 plus obstacles and a festival atmosphere at Dagmar Ski Resort near Uxbridge Toronto, including a free Kids Fun Zone.
Trail races of 3.25 km and 8 km take place in Exeter on August 30, 2026 with proceeds supporting trail maintenance.
Raid the City is a three hour urban adventure run for teams of two in Hamilton. Teams use maps and a smartphone app to score checkpoints across trails, roads, alleys and parks while travelling on foot.
September 2026
Trail running event in Thunder Bay organized by Thunder Bay Nordic Trails and Fresh Air, with cash-on-site entry and on-site number pick-up. A free Kids Mini Fun Run follows the main race.
Trail running event at Albion Hills Conservation Area on September 5, 2026 offering multiple course categories and kids races.