Belfast City Marathon

Belfast, Ireland, UK • May 3, 2026

Race Day Weather

46°

55° high

Breezy

Dry

Cool temps, variable winds

Runners will face a temperature range from 47°F at the start to 55°F by the finish, accompanied by an average humidity of 74%. Wind speeds will vary, with crosswinds in the early miles, transitioning to tailwinds around miles 6, 9, and 26, but returning to headwinds in the challenging stretch from miles 20 to 24. Adjust pacing accordingly for the headwinds and consider hydration strategies as humidity may impact comfort.

Race day forecast available in 12 days

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Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

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Weather Adj.

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Common Goals:

FAQ

When is the 2026 Belfast City Marathon?

The 2026 Belfast City Marathon will be held on Sunday May 3, 2026.

Is the Belfast City Marathon a Boston Marathon Qualifier?

Yes, the Belfast City Marathon is an official Boston Marathon qualifier.

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

The forecast calls for a high of 55°F and a low of 44°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 22 years of data

Avg Temp

56°F

L:49° H:57°

RunScore

Conditions

Rain Freq

41%

9 of 22 yrs

Wind13mph

Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Belfast City Marathon Clearing in the afternoon. 2025	50°/54°	-	37°
2024 Belfast City Marathon Cloudy skies throughout the day with early morning rain. 2024	54°/59°	-	52°
2023 Belfast City Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2023	54°/63°	Light	52°
2022 Belfast City Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2022	50°/56°	Light	50°
2019 Belfast City Marathon Partly cloudy throughout the day. 2019	45°/50°	-	34°
2018 Belfast City Marathon Partly cloudy throughout the day. 2018	50°/66°	-	52°
2017 Belfast City Marathon Clearing in the afternoon with early morning rain. 2017	52°/63°	-	46°
2016 Belfast City Marathon Partly cloudy throughout the day with rain. 2016	47°/54°	Light	39°
2015 Belfast City Marathon Partly cloudy throughout the day with early morning rain. 2015	50°/57°	-	40°
2014 Belfast City Marathon Partly cloudy throughout the day with afternoon rain. 2014	50°/54°	Light	46°
2013 Belfast City Marathon Partly cloudy throughout the day. 2013	54°/60°	-	50°
2012 Belfast City Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2012	43°/48°	Light	42°
2011 Belfast City Marathon Partly cloudy throughout the day. 2011	54°/61°	-	36°
2010 Belfast City Marathon Partly cloudy throughout the day. 2010	48°/54°	-	38°
2009 Belfast City Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2009	50°/54°	Light	48°
2008 Belfast City Marathon Partly cloudy throughout the day. 2008	49°/61°	-	49°
2007 Belfast City Marathon Partly cloudy throughout the day with rain. 2007	50°/57°	Light	43°
2006 Belfast City Marathon Partly cloudy throughout the day with rain. 2006	45°/52°	Light	36°
2005 Belfast City Marathon Partly cloudy throughout the day with rain. 2005	54°/61°	-	49°
2004 Belfast City Marathon Partly cloudy throughout the day with rain. 2004	47°/52°	Light	38°
2002 Belfast City Marathon Partly cloudy throughout the day. 2002	48°/56°	-	42°
2001 Belfast City Marathon Clearing in the afternoon. 2001	48°/59°	-	41°