Pacific Northwest Marathon

Harrisburg, OR, USA · September 19, 2026

52°·66° high·Light·Rain possible

Weather

Race Day Weather

52°at start

71° high

Light

Dry

Mild temps, light winds, cautious hydration

Runners will face a temperature rise from 52°F to 69°F, with average humidity at 72% and a dew point of 50°F. Winds will be light, shifting from the WSW at 5 mph. Given the humidity, runners should adjust their pace conservatively and ensure consistent hydration, especially as temperatures increase.

Race day forecast available in 116 days

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Distance: 26.2mi

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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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Course Map

FAQ

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

Conditions

Rain Freq

0 of 3 yrs

Wind11mph

Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Pacific Northwest Marathon Clear conditions throughout the day. 2025	54°/74°	-	52°
2024 Pacific Northwest Marathon Clear conditions throughout the day. 2024	47°/72°	-	48°
2023 Pacific Northwest Marathon Clear conditions throughout the day. 2023	53°/82°	-	53°

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