Ontario

Half Marathon Calendar Ontario 2026-2027

Monthly updates for Ontario

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Explore the best half marathons in Ontario for 2026-2027! Our updated list features 48 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

September 2026

Sep

Albion Ascent Trail Race

Hamilton, Ontario

Trail Run 3 km 5 km 10 km Half Marathon

Sep

Run for the Grapes Half Marathon

Lincoln, Ontario

5 km Half Marathon

Sep

Run4Health

Walkerton, Ontario

Road Race Walk 5 km 10 km Half Marathon

Sep

Great Rift Community Half Marathon

Confederation Park A, Ontario

Road Race Walk 5 km Half Marathon

Sep

Big Little Run

Guelph, Ontario

Road Race Walk 5 km 10 km Half Marathon

October 2026

Oct

Muskoka Marathon

Bracebridge, Ontario

5 km 10 km Half Marathon Marathon

Oct

Run for Markham

Wismer Commons, Ontario

Road Race Walk 6 km Half Marathon

Oct

The County Marathon

Prince Edward, Ontario

Road Race Walk 5 km Half Marathon Marathon

Oct

Oakville Half Marathon

Oakville, Ontario

5 km 10 km Half Marathon

Oct

Lighthouse to Lighthouse Half Marathon & 5K

Station Beach, Ontario

5 km Half Marathon

Oct

Fall Colours Run

Ottawa, Ontario

3 km 5 km ... 31 km Marathon

Oct

Thornbury Turkey Trot

Thornbury, Ontario

Road Race Walk 5 km 10 km Half Marathon

Oct

17-18

Sa - Su

Blue Mountain Spartan Trifecta Weekend

The Blue Mountains, Ontario

Obstacle Run 5 km 10 km Half Marathon

Oct

Long Sault Trail Race & Ultra

Bowmanville, Ontario

Trail Run Walk 7 km 14 km Half Marathon

Oct

9runrun Ottawa

Ottawa, Ontario

Road Race Walk 5 km 10 km Half Marathon

Oct

Race Around the Place

Carleton Place, Ontario

5 km 10 km Half Marathon

Oct

Niagara Falls Marathon

Niagara Falls, Ontario

5 km 10 km Half Marathon Marathon

Oct

MT Adventures Trail Run Series

Kingston, Ontario

Trail Run 8 km Half Marathon

Oct-Nov

31-1

Sa - Su

Hamilton Marathon Road2Hope

Hamilton, Ontario

Road Race Walk 5 km 10 km Half Marathon Marathon

January 2027

Jan

Polar Bear Run - Fergus

Fergus, Ontario

Trail Run Walk 5 km 10 km Half Marathon