Ontario close

Half Marathon calendar Ontario 2025-2026

Header image

Explore the best half marathons in Ontario for 2025-2026! Our updated list features 53 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

September 2025
Sep
28
Sunday

Albion Ascent Trail Race

Trail Run 5 km 10 km 21 km
October 2025
Oct
5
Sunday

Oakville Half Marathon

5 km 10 km 21 km
Oct
5
Sunday

Muskoka Marathon

5 km 10 km 21 km 42 km
Oct
5
Sunday

The County Marathon

5 km 21 km 42 km
Oct
11
Saturday

Thornbury Turkey Trot

5 km 10 km 21 km
Oct
12
Sunday

Fall Colours Run

3 km 5 km ... 21 km 42 km
Oct
18-19
Sa - Su

Toronto Waterfront Marathon

5 km 21 km 42 km
Oct
25
Saturday

Cornwall Multisport Club - Fall Road Race

5 km 10 km 21 km
Oct
26
Sunday

Niagara Falls Marathon

5 km 10 km 21 km 42 km
November 2025
Nov
1
Saturday

Hamilton Marathon Road2Hope

5 km 10 km 21 km 42 km
December 2025
Dec
6
Saturday

The Golden Spike Trail Race

Trail Run 5 km 10 km 21 km
February 2026
Feb
15
Sunday

Embrace Winter Run

3 km 5 km ... 21 km 42 km
March 2026
Mar
1
Sunday

Chilly Half Marathon

21 km
Articles
The Beauty of the Easy Run — Why slowing down might be the smartest thing you do for your running
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series
Stride with Confidence: A Comprehensive Guide to Saucony Running Shoes