Cascade Express Marathon

North Bend, WA, USA · September 12, 2026
fog51°·61° high·Calm·Dry
8
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Race Day Weather

fog
51°at start
63° high
Calm
Dry

Cool start, mild finish

Runners will face temperatures starting at 51°F and peaking at 62°F, with a high humidity of 80%. Light headwinds will affect segments from miles 1-2 and 13-14, while a tailwind will appear during miles 9-10. Given the humidity, runners should consider adjusting their pace conservatively and focus on hydration, especially during the challenging descent from mile 15 to 26.

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Distance: 26.2mi
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Race Info

The Cascade Express Marathon and Half Marathon run point-to-point on the Palouse to Cascades Trail, starting at Hyak Trailhead near Snoqualmie Pass and descending through the Cascade Mountains past Keechelus Lake to North Bend. The half marathon enters the historic 2.4-mile Snoqualmie Tunnel about half a mile after the start. The marathon's net elevation loss is kept under 1,500 feet so no Boston Marathon downhill time penalty applies. Both distances are USATF-certified and organized by Run Super Series. Source

FAQ

When is the 2026 Cascade Express Marathon?

The 2026 Cascade Express Marathon will be held on Saturday September 12, 2026.

Is the Cascade Express Marathon a Boston Marathon Qualifier?

Yes, the Cascade Express Marathon is an official Boston Marathon qualifier.

What is the time limit for the Cascade Express Marathon?

The time limit for the Cascade Express Marathon is 6 hours.

What will the weather be like for the 2026 Cascade Express Marathon?

The forecast calls for a high of 64°F and a low of 50°F with a 24% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
72°F
L:58° H:72°
RunScore
8
Conditions
Rain Freq
20%
1 of 5 yrs
Wind8mph
Dew54°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
cloudy
60°/65°Light
9
2024
clear-day
64°/75°-
8
2023
clear-day
55°/72°-
8
2022
clear-day
60°/84°-
8
2021
partly-cloudy-day
53°/62°-
8