The 2025 event has concluded.

Tunnel Light Marathon

North Bend, WA, USA • September 14, 2025

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Race Day Weather

partly-cloudy-day
61°
68° high
Windy
Dry

Warm conditions, steady winds

Runners will face a temperature rise from 61°F to a maximum of 68°F, with average humidity at 69% and a dew point of 54°F. Winds will be a consistent SW at 15 mph, with gusts reaching 28 mph, creating a headwind effect. It is advisable for runners to adjust their pace and stay hydrated throughout the race.

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cloudy8
cloudy8
cloudy7
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Pre-raceRace windowPost-race
Area Map

Course Map

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FAQ

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When is the 2025 Tunnel Light Marathon?

The 2025 Tunnel Light Marathon will be held on Sunday September 14, 2025.

Is the Tunnel Light Marathon a Boston Marathon Qualifier?

Yes, the Tunnel Light Marathon is an official Boston Marathon qualifier.

Historical Weather

Based on 12 years of data
Avg Temp
69°F
L:57° H:69°
RunScore
8
Conditions
Rain Freq
50%
6 of 12 yrs
Wind8mph
Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2024 Tunnel Light Marathon

Partly cloudy throughout the day.

2024
partly-cloudy-day
61°/73°-
9

2023 Tunnel Light Marathon

Partly cloudy throughout the day.

2023
clear-day
58°/79°-
8

2022 Tunnel Light Marathon

Partly cloudy throughout the day.

2022
clear-day
57°/72°-
8

2021 Tunnel Light Marathon

Cloudy skies throughout the day with morning rain.

2021
rain
57°/64°Light
9

2019 Tunnel Light Marathon

Partly cloudy throughout the day with a chance of rain throughout the day.

2019
rain
59°/61°Light
8

2018 Tunnel Light Marathon

Partly cloudy throughout the day with rain clearing later.

2018
rain
55°/63°Light
7

2017 Tunnel Light Marathon

Partly cloudy throughout the day with rain.

2017
partly-cloudy-day
55°/65°Light
8

2016 Tunnel Light Marathon

Partly cloudy throughout the day.

2016
cloudy
55°/67°-
9

2015 Tunnel Light Marathon

Partly cloudy throughout the day with morning rain.

2015
cloudy
61°/66°Light
8

2014 Tunnel Light Marathon

Clear conditions throughout the day.

2014
clear-day
54°/83°-
8

2013 Tunnel Light Marathon

Cloudy skies throughout the day with rain.

2013
cloudy
59°/66°Light
8

2012 Tunnel Light Marathon

Clear conditions throughout the day.

2012
clear-day
53°/73°-
8
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