Belfast City Half Marathon
Race Day Weather
Comfortable temps, moderate wind
Mild 54°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 62°F through the course will gradually increase perceived effort in the second half. Moderate winds around 13mph may affect pacing on open sections of the course. Moderate humidity at 69% is worth noting for effort level, especially in later miles.
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Race Info
The Belfast City Half Marathon is Northern Ireland's largest half marathon, run each September in Belfast. It starts and finishes on Ormeau Embankment and covers all four areas of the city: north, south, east and west. The route passes the Harland and Wolff cranes, Custom House Square and City Hall. Runners have three hours to finish. As of 2026 the half marathon runs as a standalone event, separate from the Belfast City Marathon weekend, which has moved to a new May date at Stormont.
