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Running Calendar Ontario 2026-2027

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Monthly updates for Ontario

Get new running races (and updates) in your inbox every month.

Explore the best running races in Ontario for 2026-2027! Our updated list features 295 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

Half Marathons Marathons Trail Runs Triathlons
October 2026
Oct
24
Sa

Race Around the Place

5 km 10 km Half Marathon
Oct
25
Su

Haunted Hustle - Oakville

5 km 10 km
Oct
25
Su

Niagara Falls Marathon

5 km 10 km Half Marathon Marathon
Oct
25
Su

Halloween Haunting

Oct
31
Sa

The Beav Trail Race

Trail Run 10 km 25 km 50 km
Oct
31
Sa

Hamilton Marathon Road2Hope

5 km 10 km Half Marathon Marathon
November 2026
Nov
7
Sa

Frost Country 6K

6 km
Nov
15
Su

Doughnut Dash 5km

5 km
Nov
15
Su

Fat Ass Trail Run

Trail Run 5 km 8 km ... 50 km 6 hr
December 2026
Dec
10
Th

5K Light Run Ottawa

5 km
Dec
19
Sa

The Frostbite Solstice Trail Race

Trail Run 2 hr 4 hr 9 hr
Dec
26
Sa

Boxing Day Run - Hamilton

4 mi 10 mi
January 2027
Jan
31
Su

Winterlude Triathlon

Triathlon
March 2027
Mar
7
Su

Chilly Half Marathon

Half Marathon
September 2027
Sep
27
Mo

Springbank Road Races