Grand Ridge Marathon

Issaquah, WA, USA · November 7, 2026
partly-cloudy-day41°·47° high·Light·Rain possible
9
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Race Day Weather

partly-cloudy-day
41°at start
47° high
Light
Rain possible

Cool start — fast day potential, chance of rain

A cool 41°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready. High humidity (83%) will make it harder to cool down through sweat — increase fluid intake accordingly.

Race day forecast available in 37 days
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Pace Calculator

Distance: 26.2mi
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Race Plan

Get your personalized Grand Ridge Marathon race plan

True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

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

Race Info

Grand Ridge Park is an incredible setting to finish off this year. Since 2000, the Washington Trails Association has been hard at work developing over seven miles of connected trail from old logging roads and user-built paths. It has all come together to create a beautiful system of trails that are ideal for running, hiking and biking. Source

FAQ

When is the 2026 Grand Ridge Marathon?

The 2026 Grand Ridge Marathon will be held on Saturday November 7, 2026.

What is the time limit for the Grand Ridge Marathon?

The time limit for the Grand Ridge Marathon is 9.25 hours.

What will the weather be like for the 2026 Grand Ridge Marathon?

The forecast calls for a high of 49°F and a low of 38°F with a 35% chance of rain.

Historical Weather

Based on 15 years of data
Avg Temp
49°F
L:44° H:52°
RunScore
9
Conditions
Rain Freq
53%
8 of 15 yrs
Wind7mph
Dew39°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
40°/56°-
10
2024
cloudy
49°/53°Light
10
2023
rain
49°/54°Light
9
2022
clear-day
33°/50°-
10
2021
rain
58°/63°Light
6
2020
cloudy
46°/52°Light
9
2019
partly-cloudy-day
48°/53°Light
10
2018
partly-cloudy-day
44°/55°-
10
2017
partly-cloudy-day
46°/53°-
10
2016
rain
49°/56°Light
10
2015
rain
46°/47°Light
8
2014
clear-day
27°/48°-
10
2013
partly-cloudy-day
42°/49°-
10
2012
partly-cloudy-day
46°/55°Light
9
2011
cloudy
34°/41°-
10