Belfast City Half Marathon

Belfast, Ireland, UKSeptember 20, 2026
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Race Day Weather

partly-cloudy-day
52°
61° high
Breezy
Dry

Cool temps, mixed winds ahead

Runners will face temperatures starting at 52°F and peaking at 61°F, with average humidity at 79%. Winds will be a headwind for the first two miles, shifting to a tailwind from miles 3-6, providing a boost before returning to crosswinds. To optimize performance, runners should pace conservatively early on and adjust for the changing winds, especially in the exposed segments.

Race day forecast available in 167 days
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Pace Calculator

Distance: 13.1mi
0:00:00
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Weather Adj.
Common Goals:

The Belfast City Half Marathon is Northern Ireland's largest half marathon event, attracting thousands of participants annually. The race starts and finishes on Ormeau Embankment, taking runners through all four areas of Belfast—North, South, East, and West. The flat and fast course offers a scenic tour of the city, passing landmarks such as the towering Harland and Wolff cranes, the vibrant Custom House Square, and the majestic City Hall. The event is renowned for its exceptional local support, with enthusiastic crowds cheering participants on throughout the route. Participants are required to complete the course within three hours. Source

FAQ

When is the 2026 Belfast City Half Marathon?

The 2026 Belfast City Half Marathon will be held on Sunday September 20, 2026.

What will the weather be like for the 2026 Belfast City Half Marathon?

The forecast calls for a high of 61°F and a low of 51°F with a 0% chance of rain.

Historical Weather

Based on 12 years of data
Avg Temp
60°F
L:54° H:60°
RunScore
8
Conditions
Rain Freq
67%
8 of 12 yrs
Wind10mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
clear-day
51°/58°Light
8
2024
partly-cloudy-day
55°/61°-
9
2023
rain
57°/61°Light
8
2022
partly-cloudy-day
52°/61°Light
9
2021
cloudy
50°/57°Light
8
2019
clear-day
61°/63°Light
8
2018
clear-day
48°/54°Light
7
2017
partly-cloudy-day
54°/61°Light
8
2016
partly-cloudy-day
54°/66°-
9
2015
partly-cloudy-day
54°/59°Light
8
2014
partly-cloudy-day
57°/61°-
8
2013
partly-cloudy-day
61°/66°-
8