Half Marathon Races in Ontario
Browse 16 upcoming half marathon races in Ontario, with dates, locations, and event details for each listing. Also explore 5K, Road, 10K, 1K, and Kids Run races in Ontario, or compare options to find your next half marathon start line.
- upcoming races
- 16
- next race · 2026
- Oct 17
- distances
- 5
Ontario race calendar
October 2026
October 2026: 7 races
- 2026 9runrun - OttawaOttawa, ONRoad · Half Marathon / 10K +2Road · Half Marathon / 10K +2
- Long Sault Trail Race & Ultra 2026Bowmanville, ONTrail · 14K / Half Marathon +3Trail · 14K / Half Marathon +3
- TCS Toronto Waterfront Marathon 2026Toronto, ONRoad · Half Marathon / 5K +1Road · Half Marathon / 5K +1
- Race Around the Place 2026Carleton Place, ONTrail · Half Marathon / 5K +1Trail · Half Marathon / 5K +1
- 2026 Niagara Falls 10k, Half & MarathonNiagara Falls, ONRoad · 10K / Half Marathon +1Road · 10K / Half Marathon +1
- 2026 U.S. & International Registrants, Niagara Falls 10k, Half & MarathonNiagara Falls, ONRoad · 10K / Marathon +1Road · 10K / Marathon +1
- 2026 Hamilton Marathon Road2HopeHamilton, ONRoad · 5K / Marathon +3Road · 5K / Marathon +3
Local race details
- Entry fees
- Starting entry fees we have on file range from $30.44 to $252.78 (12 races). Half or more start at $66.40 or less.
- Surface
- Surface is listed for 16 races: 13 road, 3 trail.
- Kids events
- 5 races list a kids event.
Based on the races listed on this page. A detail shows only when at least 3 races have it on file.