Run the River Half Marathon

Kennewick, WA, USA · April 17, 2027·
partly-cloudy-day49°·56° high·Light·Dry
10
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Race Day Weather

partly-cloudy-day
49°at start
67° high
Light
Dry
Your goal
0:00:00

Cool start — fast day potential, big temp swing

A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 67°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 161 days
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Pace Calculator

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Race Plan

Get your personalized Run the River 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 Run the River Half Marathon is a USATF-certified out-and-back course on the Saturday of race weekend. It starts and finishes beside the river in Columbia Park in Kennewick, follows paved paths and roads along the Columbia River, and turns around in Richland close to the I-182 Bridge to Pasco. The route is flat with a couple of small rolling hills.

Race weekend

Friday, April 16
6:00 PMKids Marathon (1.2 mi)
Saturday, April 17
7:30 AMMarathon (26.2 mi)
8:30 AMHalf Marathon (13.1 mi)
8:45 AM5K (3.1 mi)
Area Map

Course Map

FAQ

When is the 2027 Run the River Half Marathon?

The 2027 Run the River Half Marathon will be held on Saturday April 17, 2027.

What will the weather be like for the 2027 Run the River Half Marathon?

The forecast calls for a high of 69°F and a low of 44°F with a 3% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 3 years of data
Avg Temp
49°F
L:46° H:52°
RunScore
10
Conditions
Rain Freq
33%
1 of 3 yrs
Wind6mph
Dew37°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
39°/47°-
10
2025
partly-cloudy-day
52°/54°Light
10
2023
cloudy
48°/54°-
10