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21K Races in Ottawa

Browse upcoming 21k races in Ottawa, with race dates, distances, locations, and registration details.

1 race listed

Road2026 Canada Army Run / Course de lArmée du Canada

2026 Canada Army Run / Course de lArmée du Canada

Sep 20, 2026
Ottawa, ON
5K10K21KHalf Marathon

More race types in Ottawa

18 races

5K

13 races

Road

8 races

10K

8 races

1K

6 races

2K

3 races

Half Marathon

2 races

15K

2 races

Cross Country

2 races

Mixed

2 races

Trail

1 race

1.2K

1 race

1.6K

1 race

100m

1 race

20K

1 race

3K

1 race

400m

1 race

6K

1 race

800m

1 race

Marathon

1 race

Track

1 race

Ultra