Trail Running Calendar near Alliston 2026-2027

October 2026

Trail Run 5 km 10 km

Trail races at Horseshoe Valley Resort on October 31, 2026, from a 1 km family dash to a solo or team eight hour endurance challenge.

November 2026

Nov

28

Sa

Chill Session

Mulmur | 13 km from Alliston

Trail Run 5 km 10 km

Trail event at Mansfield Outdoor Centre offering 10 km, 5 km and a 1 km kids race, with hoodies, medals, chili and beer for adult distances. Cup free, on course aid and meals in the cafe, registration closes November 1 2026.

February 2027

Feb

27

Sa

Polar Rush

Palgrave | 23 km from Alliston

Obstacle Run 6 km

A winter obstacle race at Albion Hills with a snowy 5-6 km course and 14 obstacles, finish-line hot chocolate and a metal finisher medal. Family discounts apply and a Polar Rush buff is included.

April 2027

Apr

10

Sa

Caledon Crusher

Shelburne | 28 km from Alliston

Trail Run 25 km 50 km 72 km

Trail race in Mono ON featuring 25K 50K and 72K on the Caledon Hills Bruce Trail with aid stations mandatory gear and on-course bus transportation for longer starts.

Apr

24

Sa

Pick Your Poison Trail Run

Barrie | 30 km from Alliston

Trail Run 13 km 25 km 50 km

A spring trail race in Copeland Forest near Barrie offering 12.5 km 25 km and 50 km looped courses with hilly terrain; proceeds support mental health.

May 2027

May

29

Sa

Great Mansfield Outdoors

Mulmur | 13 km from Alliston

Trail Run 5 km 10 km ... 100 km 100 mi

Single-track trail event May 29, 2027 at Mansfield Outdoor Centre offering distances from 5K to 100 miles, relay teams and on-site camping options.

July 2027

Jul

10-12

Sa - Mo

Utopia Backyard Ultra

Utopia | 20 km from Alliston

Backyard Ultra 7 km

Utopia Backyard Ultra at Tiffin Centre: one 6.7056 km loop every hour, with Backyard 6, Backyard 12 or the Full BYU formats until one finisher remains.