Tri-Cities Marathon

Richland, WA, USA · October 25, 2026
partly-cloudy-day45°·54° high·Light·Dry
10
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Weather
Course
FAQ
History

Race Day Weather

partly-cloudy-day
45°at start
61° high
Light
Dry

Cool day, moderate wind

Runners will face a temperature range from 45°F to 60°F, with moderate humidity at 64% and a dew point of 40°F. Wind will come from the WSW at 8 mph, with gusts up to 20 mph. It's advisable for runners to start conservatively and maintain hydration, benefiting from the cooler conditions.

Race day forecast available in 3 days
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Race Info

Website

Race weekend

Sunday, October 25
7:30 AMMarathon (26.2 mi)
Relay (26.2 mi)
Half Marathon (13.1 mi)
5K (3.1 mi)
Area Map

Course Map

Course Map Unavailable

We don't have course map data for Tri-Cities Marathon yet. If you have a GPX file (or other format) for this race, we'd love to add it!

FAQ

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When is the 2026 Tri-Cities Marathon?

The 2026 Tri-Cities Marathon will be held on Sunday October 25, 2026.

What will the weather be like for the 2026 Tri-Cities Marathon?

The forecast calls for a high of 65°F and a low of 45°F with a 5% chance of rain.

Historical Weather

Based on 1 years of data
Avg Temp
30°F
L:22° H:38°
RunScore
10
Conditions
Rain Freq
0%
0 of 1 yrs
Wind0mph
Dew25°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2023 Tri-Cities Marathon

Clear conditions throughout the day.

2023
clear-night
22°/38°-
10

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Free guidesMarathon Fueling Guide·Carb Loading Guide·Race Morning Guide·Race Day Gear Guide·Pacing Strategy Guide·Mental Strategy Guide

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