The 2026 Pacific Northwest 10K has concluded.

Pacific Northwest 10K

Race complete
Harrisburg, OR, USA · September 19, 2026·
cloudy53°·54° high·Light·Dry
8
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Pacific Northwest 10K race day weather

cloudy
53°at start
69° high
Light
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 53°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 69°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. High humidity (84%) will make it harder to cool down through sweat — increase fluid intake accordingly.

fog9
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cloudy8
cloudy8
cloudy7
partly-cloudy-day6
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partly-cloudy-day5
partly-cloudy-day5
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Pace Calculator

6.2mi
0:00:00
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Pace
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Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Pacific Northwest 10K

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Pacific Northwest 10K race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Pacific Northwest 10K

The Pacific Northwest Marathon 10K covers 6.2 miles on the Saturday of race weekend, starting and finishing at Harrisburg Middle School in Harrisburg, Oregon. The race describes its Willamette Valley courses as flat and simple, with few turns, each marked with arrows, chalk and volunteers.

Race weekend

Saturday, September 19
7:00 AMMarathon (26.2 mi)8:30 AMHalf Marathon (13.1 mi)
9:30 AM10K (6.2 mi)
9:40 AM5K (3.1 mi)
Area Map
Course Map

Pacific Northwest 10K FAQ

When is the 2026 Pacific Northwest 10K?

The 2026 Pacific Northwest 10K will be held on Saturday September 19, 2026.

What will the weather be like for the 2026 Pacific Northwest 10K?

The forecast calls for a high of 69°F and a low of 49°F with a 0% chance of rain. Check our detailed hourly forecast above for the best 10K race plan.

What is the weather usually like for the Pacific Northwest 10K?

Over the 5 years racecast.io has race-day weather for (2022 to 2026), it averaged 56°F at the start and 60°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Pacific Northwest 10K?

Of the 5 years on record, 2023 was the warmest, reaching 66°F during race hours. The coldest start was 2022, at 53°F.

What was the windiest Pacific Northwest 10K?

Of the 5 years on record, 2024 was the windiest, with wind averaging 8 mph during race hours. The calmest was 2022, at 3 mph.

Pacific Northwest 10K weather history

Based on 5 years of data
Avg Temp
58°F
L:56° H:60°
RunScore
7
Conditions
Rain Freq
0%
0 of 5 yrs
Wind6mph
Dew51°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
53°/54°-
8
2025
clear-day
58°/62°-
7
2024
clear-day
55°/59°-
8
2023
clear-day
62°/66°-
6
2022
partly-cloudy-day
53°/58°-
8