Ontario

Half Marathon calendar Ontario 2025-2026

Name: Fall Colours Run
Start: 2025-10-12
End: 2025-10-12
Location: Ottawa

Explore the best half marathons in Ontario for 2025-2026! Our updated list features 26 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

October 2025

Oct

Sunday

Fall Colours Run

Ottawa, Ontario

3 km 5 km ... 21 km 42 km

Oct

18-19

Sa - Su

Blue Mountain Spartan Trifecta Weekend

The Blue Mountains, Ontario

Obstacle Run 5 km 10 km 21 km

Oct

18-19

Sa - Su

Toronto Waterfront Marathon

Toronto, Ontario

5 km 21 km 42 km

Oct

Saturday

5 Peaks Cider Run

Uxbridge, Ontario

Trail Run 7 km 14 km 21 km

Oct

Sunday

Niagara Falls Marathon

Niagara Falls, Ontario

5 km 10 km 21 km 42 km

November 2025

Nov

1-2

Sa - Su

Hamilton Marathon Road2Hope

Hamilton, Ontario

5 km 10 km 21 km 42 km

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