Bellingham Bay Marathon

Bellingham, WA, USA · September 20, 2026

52°·60° high·Light·Dry

Weather

Race Day Weather

52°at start

62° high

Light

Dry

Mild conditions, light breeze

Runners will face a steady temperature rise from 52°F to 62°F, with a light breeze from the SSW at 5 mph. Humidity will be relatively high at 77%, suggesting a need for hydration. With a chance of light rain, runners should remain prepared for a potential wet patch, but overall conditions favor a strong performance.

Race day forecast available in 80 days

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Distance: 26.2mi

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Race Info

Bellingham, Washington holds a run and walk marathon along the Bellingham Bay. There are three marathon races to choose from including a full marathon, half marathon, 10k, and/or 5k. Bellingham Bay Marathon, BBM, is a Boston marathon qualifier. Furthermore, all BBM courses are USATF-certified. The Bellingham Bay marathon was founded in 2003 by the Bellingham Bay Swim Team. In addition, 100% of net proceeds benefit Whatcom County youth non-profit organizations. Wikipedia

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Course Map

FAQ

When is the 2026 Bellingham Bay Marathon?

The 2026 Bellingham Bay Marathon will be held on Sunday September 20, 2026.

Is the Bellingham Bay Marathon a Boston Marathon Qualifier?

Yes, the Bellingham Bay Marathon is an official Boston Marathon qualifier.

What is the time limit for the Bellingham Bay Marathon?

The time limit for the Bellingham Bay Marathon is 6.5 hours.

What will the weather be like for the 2026 Bellingham Bay Marathon?

The forecast calls for a high of 65°F and a low of 52°F with a 23% chance of rain.

Historical Weather

Based on 18 years of data

Avg Temp

63°F

L:51° H:64°

RunScore

Conditions

Rain Freq

33%

6 of 18 yrs

Wind9mph

Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Bellingham Bay Marathon Partly cloudy throughout the day with rain clearing later. 2025	58°/65°	Light	55°
2024 Bellingham Bay Marathon Partly cloudy throughout the day with afternoon rain. 2024	56°/62°	-	52°
2023 Bellingham Bay Marathon Partly cloudy throughout the day with late afternoon rain. 2023	50°/66°	-	53°
2022 Bellingham Bay Marathon Clear conditions throughout the day. 2022	50°/72°	-	55°
2021 Bellingham Bay Marathon Clear conditions throughout the day. 2021	50°/68°	-	55°
2019 Bellingham Bay Marathon Partly cloudy throughout the day. 2019	50°/58°	-	32°
2018 Bellingham Bay Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2018	53°/56°	Light	51°
2017 Bellingham Bay Marathon Partly cloudy throughout the day. 2017	48°/63°	-	50°
2016 Bellingham Bay Marathon Partly cloudy throughout the day with early morning rain. 2016	55°/69°	-	52°
2015 Bellingham Bay Marathon Clear conditions throughout the day. 2015	39°/59°	-	44°
2014 Bellingham Bay Marathon Partly cloudy throughout the day. 2014	54°/64°	-	54°
2013 Bellingham Bay Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2013	53°/56°	Light	49°
2012 Bellingham Bay Marathon Clear conditions throughout the day. 2012	43°/62°	-	47°
2011 Bellingham Bay Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2011	61°/70°	Light	49°
2010 Bellingham Bay Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2010	61°/63°	Light	59°
2009 Bellingham Bay Marathon Clear conditions throughout the day. 2009	40°/70°	-	39°
2008 Bellingham Bay Marathon Clear conditions throughout the day with early morning rain. 2008	46°/68°	-	46°
2007 Bellingham Bay Marathon Cloudy skies throughout the day with rain. 2007	55°/60°	Light	50°