The 2025 event has concluded.

Bellingham Bay Marathon

Bellingham, WA, USA • September 21, 2025
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rain Partly cloudy throughout the day with rain clearing later.

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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When is the 2025 Bellingham Bay Marathon?

The 2025 Bellingham Bay Marathon will be held on Sunday September 21, 2025.

Is the Bellingham Bay Marathon a Boston Marathon Qualfier?

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.

Historical Weather

Based on 17 years of data
Avg Temp
63°F
L:51°H:64°
RunScore
8
Conditions
Rain Freq
29%
5 of 17 yrs
Wind9mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2024 Bellingham Bay Marathon

Partly cloudy throughout the day with afternoon rain.

2024
partly-cloudy-day
56°/62°-
9

2023 Bellingham Bay Marathon

Partly cloudy throughout the day with late afternoon rain.

2023
partly-cloudy-day
50°/66°-
9

2022 Bellingham Bay Marathon

Clear conditions throughout the day.

2022
clear-day
50°/72°-
8

2021 Bellingham Bay Marathon

Clear conditions throughout the day.

2021
partly-cloudy-day
50°/68°-
8

2019 Bellingham Bay Marathon

Partly cloudy throughout the day.

2019
clear-day
50°/58°-
7

2018 Bellingham Bay Marathon

Cloudy skies throughout the day with a chance of rain throughout the day.

2018
rain
53°/56°Light
7

2017 Bellingham Bay Marathon

Partly cloudy throughout the day.

2017
partly-cloudy-day
48°/63°-
8

2016 Bellingham Bay Marathon

Partly cloudy throughout the day with early morning rain.

2016
cloudy
55°/69°-
9

2015 Bellingham Bay Marathon

Clear conditions throughout the day.

2015
clear-day
39°/59°-
8

2014 Bellingham Bay Marathon

Partly cloudy throughout the day.

2014
fog
54°/64°-
8

2013 Bellingham Bay Marathon

Cloudy skies throughout the day with a chance of rain throughout the day.

2013
rain
53°/56°Light
6

2012 Bellingham Bay Marathon

Clear conditions throughout the day.

2012
clear-day
43°/62°-
8

2011 Bellingham Bay Marathon

Partly cloudy throughout the day with rain in the morning and afternoon.

2011
clear-day
61°/70°Light
6

2010 Bellingham Bay Marathon

Cloudy skies throughout the day with a chance of rain throughout the day.

2010
cloudy
61°/63°Light
9

2009 Bellingham Bay Marathon

Clear conditions throughout the day.

2009
clear-day
40°/70°-
8

2008 Bellingham Bay Marathon

Clear conditions throughout the day with early morning rain.

2008
clear-day
46°/68°-
8

2007 Bellingham Bay Marathon

Cloudy skies throughout the day with rain.

2007
cloudy
55°/60°Light
6
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