Grand Ridge Marathon

Issaquah, WA, USA · November 7, 2026

40°·47° high·Light·Rain possible

Weather

Race Day Weather

40°at start

47° high

Light

Rain possible

Cool start — fast day potential, chance of rain

A cool 40°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 98 days

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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

Website

Course Map

FAQ

When is the 2026 Grand Ridge Marathon?

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

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

52°F

L:44° H:52°

RunScore

Conditions

Rain Freq

47%

7 of 15 yrs

Wind8mph

Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Grand Ridge Marathon Clearing in the afternoon. 2025	40°/56°	-	41°
2024 Grand Ridge Marathon Cloudy skies throughout the day with rain. 2024	49°/53°	Light	45°
2023 Grand Ridge Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2023	49°/54°	Light	44°
2022 Grand Ridge Marathon Clear conditions throughout the day. 2022	33°/50°	-	32°
2021 Grand Ridge Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2021	58°/63°	Light	57°
2020 Grand Ridge Marathon Partly cloudy throughout the day with rain clearing later. 2020	46°/52°	Light	41°
2019 Grand Ridge Marathon Partly cloudy throughout the day with afternoon rain. 2019	48°/53°	-	44°
2018 Grand Ridge Marathon Clear conditions throughout the day. 2018	44°/55°	-	39°
2017 Grand Ridge Marathon Clearing in the afternoon. 2017	46°/53°	-	39°
2016 Grand Ridge Marathon Cloudy skies throughout the day with rain in the morning and afternoon. 2016	49°/56°	Light	39°
2015 Grand Ridge Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2015	46°/47°	Light	44°
2014 Grand Ridge Marathon Clear conditions throughout the day. 2014	27°/48°	-	19°
2013 Grand Ridge Marathon Partly cloudy throughout the day. 2013	42°/49°	-	31°
2012 Grand Ridge Marathon Partly cloudy throughout the day with rain. 2012	47°/55°	Light	41°
2011 Grand Ridge Marathon Partly cloudy throughout the day. 2011	34°/41°	-	31°

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