Trail Running calendar near Byron 2026-2027

Runners start together in London, Ontario and pick their own routes to get as far as possible from the start within set time limits. The race includes 8 hour, 4 hour and 2 hour categories and uses live tracking for verification.

A 5K obstacle event at Boler Mountain on July 25, 2026 featuring 25 plus obstacles, 2.5 million cubic feet of foam, a free kids zone, live DJ, food vendors and a licensed beer garden.

A backyard ultra on an approximately 3.36 km loop in Arva Ontario where runners repeat an hourly 6.7056 km loop until one remains; the field is limited to 67 and the event supports the Children's Health Foundation.

Family fitness event at Gibbons Park offering adult, kids and dog obstacle courses across several distances. Obstacles are not revealed and specific rules apply for canine participants.

A trail event in Exeter, Ontario on August 30, 2026 offering an 8K run and a 3.25K run/walk across local bridges. Net proceeds support The Friends of the Trail for future trail maintenance.

Tough Mudder Toronto on September 12, 2026 at Gopher Dunes offers 5K and 15K courses with multiple obstacles, finisher medals and a Mudder Village. Spectator passes, group packages and volunteer options are available.

Spartan Race comes to Gopher Dunes near London Ontario on September 13, 2026 offering a 5 km Sprint with 20 obstacles and a 10 km Super with 25 obstacles, plus PARA heats and spectator options.

Trail races at Springwater Conservation Area in Aylmer on September 26, 2026 offer 8k, 16k, 24k and an 8k night race with mandatory headlamps. Entries include park admission and part of proceeds support the Children's Health Foundation.

Turkey Trot at Springbank Park on Monday October 12 2026 offers a 6.5 km cross country loop, a 2 km grass loop and a roughly 200 m Kiddy Trot, with donations collected for the London Food Bank.

Trail races at Fanshawe Conservation Area offering 25k one loop and 50k two loops on a mixed surface reservoir trail. The event includes aid stations, timing chip, finisher medal and a planned burgundy unisex half zip.

Tails on Trails at Springbank Park on October 17, 2026 is a fundraiser for Humane Society London & Middlesex, featuring a 5 km run and 1 km walk, participant packs and team fundraising challenges.