Pacific Northwest Marathon
Race Day Weather
Mild start, warming up quickly
Runners will face a temperature rise from 54°F at the start to 72°F by the end, with average humidity at 74%. A light crosswind will affect the first few miles, transitioning to a tailwind around Mile 3, which may aid speed. As temperatures climb, it's advisable to adjust pacing or hydrate more frequently, especially during the headwind sections from Miles 17-27.
Pace Calculator
Get forecast alerts for Pacific Northwest Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
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.
FAQ
When is the 2026 Pacific Northwest Marathon?
Is the Pacific Northwest Marathon a Boston Marathon Qualifier?
What will the weather be like for the 2026 Pacific Northwest Marathon?
Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 |  | 54°/74° | - | 52° | |
2024 | | 47°/72° | - | 48° | |
2023 | | 53°/82° | - | 53° | |
2022 | | 45°/69° | - | 47° |