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Half Marathon Calendar Ontario 2025-2026

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Explore the best half marathons in Ontario for 2025-2026! Our updated list features 31 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

February 2026
Feb
15
Su

Embrace Winter Run

3 km 5 km ... Half Marathon Marathon
April 2026
Apr
25
Sa

Merrickville Heritage Classic

5 km 10 km Half Marathon
Apr
26
Su

Beneva Mississauga Marathon

5 km 10 km Half Marathon Marathon
May 2026
May
2
Sa

5 Peaks Trail Running Series: Kelso

Trail Run Half Marathon
May
3
Su

Spring Fling Marathon

5 km 10 km Half Marathon Marathon
May
3
Su

Toronto Marathon

5 km 10 km Half Marathon Marathon
May
23-24
Sa - Su

Tamarack Ottawa Race Weekend

5 km 10 km Half Marathon Marathon
May
30
Sa

Pelee Island Half Marathon

Half Marathon
June 2026
Jun
7
Su

Waterfront Run Barrie

5 km 10 km Half Marathon
Jun
13
Sa

Buttertart Trot

5 km 10 km Half Marathon
Jun
14
Su

Kawartha Sun Run

5 km 10 km Half Marathon
Jun
20
Sa

Community Strong Race

5 km 10 km Half Marathon Marathon
July 2026
Jul
11
Sa

Summit 700 Trail Runs

Trail Run 5 km 10 km Half Marathon 50 km
Jul
13
Mo

The ENDURrun Prelim

Trail Run 3 km 5 mi 10 km Half Marathon
Jul
18-19
Sa - Su

Xterra Conquer the Crater

Trail Run 3 km 5 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
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