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Running Calendar Ontario 2025-2026

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Explore the best running races in Ontario for 2025-2026! Our updated list features 197 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
February 2026
Feb
28
Sa

Polar Rush
Obstacle Run 6 km
March 2026
Mar
1
Su

Chilly Half Marathon
Mar
7
Sa

cone5togo
5 km
Mar
14
Sa

Frigid 10K
5 km 10 km
Mar
15
Su

Toronto St. Patrick's Day Race
5 km 10 km
Mar
15
Su

St Patrick's Day 5K - Peterborough
5 km
April 2026
Apr
4
Sa

Beneva Spring Run-Off
5 km 8 km
Apr
11
Sa

Caledon Crusher
Trail Run 25 km 50 km 72 km
Apr
12
Su

Around the Bay Road Race
30 km
Apr
18
Sa

endurRACE
5 km 8 km
Apr
18
Sa

The Foxtail Rail Trail Race
Trail Run 5 km 10 km 25 km 50 km
Apr
18
Sa

Toronto 10K
10 km
Apr
18
Sa

Spring WarmUp
Apr
19
Su

Her Majesty's Royal Races
3 km 5 km 10 km
Apr
19
Su

Start Here Go Anywhere Run
4 km
Apr
25
Sa

Merrickville Heritage Classic
5 km 10 km Half Marathon
Apr
25
Sa

Pick Your Poison Trail Run
Trail Run 13 km 25 km 50 km
Apr
26
Su

Bumrun Toronto
5 km
Apr
26
Su

Beneva Mississauga Marathon
5 km 10 km Half Marathon Marathon
Apr
26
Su

CMCC Backs in Motion
5 km 10 km