Pacific Northwest Marathon

Harrisburg, OR, USA · September 19, 2026
partly-cloudy-day52°·66° high·Light·Rain possible
9
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Race Day Weather

partly-cloudy-day
52°at start
71° high
Light
Dry

Mild start, warming trend ahead

Runners will face a temperature rising from 52°F at the start to 69°F by the finish. With a light southwesterly breeze peaking at 5 mph and humidity around 72%, pacing adjustments may be necessary as conditions warm. Hydration should be prioritized, especially as temperatures increase, and light rain may occur intermittently.

Race day forecast available in 107 days
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Pace Calculator

Distance: 26.2mi
0:00:00
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Race Info

The Pacific Northwest Marathon offers a flat, fast out-and-back course through the scenic Willamette Valley farmland in Harrisburg, Oregon. With marathon, half marathon, 10K, and 5K options, the event is known for its small race charm, frequent aid stations, and friendly volunteers, making it a great fall tune-up. The USATF-certified course is ideal for runners aiming for personal bests or Boston Marathon qualification.

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FAQ

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When is the 2026 Pacific Northwest Marathon?

The 2026 Pacific Northwest Marathon will be held on Saturday September 19, 2026.

Is the Pacific Northwest Marathon a Boston Marathon Qualifier?

Yes, the Pacific Northwest Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Pacific Northwest Marathon?

The forecast calls for a high of 76°F and a low of 51°F with a 13% chance of rain.

Historical Weather

Based on 3 years of data
Avg Temp
76°F
L:51° H:76°
RunScore
7
Conditions
Rain Freq
0%
0 of 3 yrs
Wind11mph
Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2025 Pacific Northwest Marathon

Clear conditions throughout the day.

2025
clear-day
54°/74°-
8

2024 Pacific Northwest Marathon

Clear conditions throughout the day.

2024
clear-day
47°/72°-
8

2023 Pacific Northwest Marathon

Clear conditions throughout the day.

2023
clear-day
53°/82°-
8

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