Ottawa Half Marathon presented by Desjardins
Ottawa's marquee half marathon tours Canada's capital, crossing between Ontario and Quebec before a crowd-backed finish near downtown landmarks.
Quick facts
- One of the signature distances at Canada's largest race weekend.
- Crosses between Ontario and Quebec on a capital-city route.
- Large field with strong downtown support and race infrastructure.
- Variable late-spring weather makes flexible pacing important.
Is registration open for the 2027 Ottawa Half Marathon presented by Desjardins?
Registration for the 2027 Ottawa Half Marathon presented by Desjardins is open.
About the Ottawa Half Marathon presented by Desjardins
This is one of the anchor races of Ottawa Race Weekend, with the scale and support of a major Canadian road event. The cross-river route gives runners a useful mix of capital landmarks, green space, and sustained crowd energy.
Course
The route moves through central Ottawa, crosses into Gatineau, and returns toward the downtown finish. Bridges and gradual city rollers add texture, but the course remains approachable when runners stay patient through the early congestion.
Race-day weather
Late May can range from crisp and calm to warm, humid, or windy. The open bridges amplify wind, while sunny conditions can make the second half feel much warmer than the start.
Past Ottawa Half Marathon presented by Desjardins dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Sunday, May 30, 2027 | Upcoming | — |
| 2026 | Sunday, May 24, 2026 | Completed | Open results |
| 2025 | Sunday, May 25, 2025 | Completed | Open results |
| 2024 | Sunday, May 26, 2024 | Completed | Open results |
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Ottawa Half Marathon presented by Desjardins FAQ
When is the Ottawa Half Marathon presented by Desjardins?
The 2027 Ottawa Half Marathon presented by Desjardins is on Sunday, May 30, 2027.
Is registration open for the 2027 Ottawa Half Marathon presented by Desjardins?
Registration for the 2027 Ottawa Half Marathon presented by Desjardins is open. View the official registration details at runottawa.ca.
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Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.