The 2026 Pacific Northwest Half Marathon has concluded.Share your finish

Pacific Northwest Half Marathon

Race complete
Harrisburg, OR, USA · September 19, 2026·
cloudy52°·54° high·Light·Dry
8
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Race Day Weather

cloudy
52°at start
69° high
Light
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 52°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 (87%) will make it harder to cool down through sweat — increase fluid intake accordingly.

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Pace Calculator

13.1mi
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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 Half Marathon 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

Race Info

The Pacific Northwest Marathon half marathon covers 13.1 miles out and back from Harrisburg Middle School in Harrisburg, Oregon, on the Saturday of race weekend. The route runs through the farmland of the southern Willamette Valley, turns around at about the 6.6-mile mark and returns to the school for the finish. The course is flat, 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)

FAQ

When is the 2026 Pacific Northwest Half Marathon?

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

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

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 half marathon race plan.

Historical Weather

Based on 5 years of data
Avg Temp
56°F
L:52° H:60°
RunScore
8
Conditions
Rain Freq
0%
0 of 5 yrs
Wind5mph
Dew51°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
52°/54°-
8
2025
clear-day
55°/62°-
7
2024
clear-day
49°/59°-
8
2023
clear-day
57°/66°-
7
2022
partly-cloudy-day
49°/58°-
9