Races by location and type
Marathon Races in Ontario
Browse upcoming marathon races in Ontario, with race dates, distances, locations, and registration details.
10 races listed
Tamarack Ottawa Race Weekend 2026
May 23, 2026
Ottawa, Ontario
Half Marathon10K2K5K+2
2026 The Runners Shop Longest Day Ekiden Relay Race
Jun 16, 2026
Toronto, ON
Marathon
Community Strong Race Weekend 2026
Jun 20, 2026
Sault Ste. Marie, Ontario
10KMarathonHalf Marathon5K+1
Niagara Ultra 2026
Jun 20, 2026
Niagara on the Lake, ON
10K50K80KHalf Marathon+2
Falling Water Trail Marathon/ Half Marathon 2026
Aug 8, 2026
Eugenia, Ontario
63.3KHalf MarathonMarathon
The ENDURrun 2026
Aug 9, 2026
Waterloo Region, Ontario
5K10K80K25.6K+3
TCS Toronto Waterfront Marathon 2026
Oct 17, 2026
Toronto, ON
Half Marathon5KMarathon
2026 Niagara Falls 10k, Half & Marathon
Oct 25, 2026
Niagara Falls, ON
MarathonHalf Marathon10K
2026 U.S. & International Registrants, Niagara Falls 10k, Half & Marathon
Oct 25, 2026
Niagara Falls, ON
MarathonHalf Marathon10K
2026 Hamilton Marathon Road2Hope
Oct 31, 2026
Hamilton, ON
1K5K10KHalf Marathon+1
More race types in Ontario
109 races
5K
89 races
Road
52 races
1K
49 races
10K
34 races
Trail
20 races
Half Marathon
13 races
2K
9 races
3K
6 races
8K
5 races
25K
5 races
50K
4 races
200m
4 races
Obstacle
3 races
15K
3 races
2.5K
3 races
80K
3 races
Cross Country
3 races
Mixed
3 races
Ultra
2 races
20K
2 races
21K
2 races
400m
2 races
7.5K
2 races
7K
1 race
0.25K
1 race
0.2K
1 race
0.6K
1 race
1 Mile
1 race
1.2K
1 race
1.6K
1 race
10.4K
1 race
100 Miles
1 race
100K
1 race
100m
1 race
130K
1 race
14K
1 race
2.1K
1 race
2.3K
1 race
21.1K
1 race
24.6K
1 race
25.6K
1 race
26.5K
1 race
40K
1 race
4K
1 race
5 Miles
1 race
53K
1 race
6.5K
1 race
60K
1 race
63.3K
1 race
65K
1 race
6K
1 race
800m
1 race
9K
1 race
Fun Run
1 race
Fun Run / Charity
1 race