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Half Marathon Calendar Ontario 2026-2027

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Monthly updates for Ontario

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Explore the best half marathons in Ontario for 2026-2027! Our updated list features 47 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

July 2026
Jul
18-19
Sa - Su

Xterra Conquer the Crater

Trail Run 5 km 10 km Half Marathon Marathon
Jul
25
Sa

Tally in the Valley Trail Race

Trail Run 7 km Half Marathon ... 100 mi 24 hr
August 2026
Aug
8
Sa

Falling Water Trail Marathon

Trail Run Half Marathon Marathon 63 km
Aug
9
Su

The ENDURrun

Trail Run 10 km 15 km ... 30 km Marathon
Aug
16
Su

Kakabeka Falls Half Marathon

8 km Half Marathon
Aug
22
Sa

GLO Toronto Half Marathon

5 km 10 km Half Marathon
Aug
23
Su

Calabogie Peaks Trail Run

Trail Run 10 km Half Marathon
September 2026
Sep
12-13
Sa - Su

Tobermory Trail Race

Trail Run 5 km 7 km Half Marathon Marathon
Sep
12
Sa

North Bay Road Race

Trail Run 5 km 10 km Half Marathon
Sep
13
Su

Windsor Waterfront Half Marathon

5 km Half Marathon
Sep
13
Su

Georgina Marathon

5 km 10 km Half Marathon Marathon
Sep
19
Sa

That Dam Hill

5 km Half Marathon Marathon
Sep
20
Su

Canada Army Run

5 km 10 km Half Marathon
Sep
27
Su

Railway City Road Races

5 km 10 km Half Marathon
Sep
27
Su

Springbank Road Races

5 km Half Marathon
Sep
27
Su

Albion Ascent Trail Race

Trail Run 5 km 10 km Half Marathon
October 2026
Oct
3
Sa

Muskoka Marathon

5 km 10 km Half Marathon Marathon
Oct
4
Su

The County Marathon

5 km Half Marathon Marathon
Oct
4
Su

Oakville Half Marathon

5 km 10 km Half Marathon
Oct
10-11
Sa - Su

Fall Colours Run

3 km 5 km ... 31 km Marathon