Ontario
Trail Running Calendar Ontario 2026-2027
Explore the best trail runs in Ontario for 2026-2027! Our updated list features 114 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
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 at Devil's Glen with 16.66 km, 33.3 km and 66.6 km options featuring major climbs and a unique "keyhole" crawl.
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 5K obstacle-course fun run at Wesley Clover Parks with over 25 obstacles, foam and mud, a free kids zone and festival amenities.
Spartan obstacle course weekend at Calabogie Peaks near Ottawa featuring Sprint, Super, kids races and multihour Hurricane Heat events.
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.
Family-focused obstacle event at Gibbons Park with adult, kids and K9 courses, survival style obstacles and a team tethering system.
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.
Family fitness event at Malden Park on August 29, 2026 featuring varied terrain obstacles, medals for participants, and a welcome for family dogs.
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 event in Exeter, Ontario featuring an 8K run and a 3.25K run/walk across multiple bridges; proceeds support Friends of the Trail.
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 at Albion Hills Conservation Area on September 5, 2026 with Sport, Enduro and Grit course options plus timed kids races and published CAD fees with taxes.
Trail running at Albion Hills with three course distances, on-course aid, riverside camping and pool facilities.
Trail races at Camp Fortune on September 6 2026, offering 20K (UTMB Index), 10K, 5K and a 2K kids race on technical Gatineau Park singletrack.
The Haliburton Forest Trail Race marks its 33rd year in 2026. Participants can run distances from 12K to 100 miles on the rugged, wooded trails of a private forest reserve.