Girdwood Marathon

Girdwood, AK, USA · October 3, 2026
rain41°·46° high·Light·Light rain
6
Register

Race Day Weather

rain
41°at start
46° high
Light
Light rain

Cool start, light rain expected

Runners will face temperatures starting at 41°F and reaching a high of 46°F. With humidity at 85% and light rain expected, pacing should be conservative, especially early on. Wind will be light, but gusts up to 20 mph may affect runners' stability. Hydration will be important due to the high humidity.

Race day forecast available in 23 days
rain6
rain6
rain6
rain6
rain6
rain6
rain6
rain6
rain6
rain6
rain6

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
Weather Adj.
Common Goals:

Get forecast alerts for Girdwood Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Info

The Girdwood Marathon is a trail marathon through the Girdwood Valley near Alaska's Alyeska Resort. It starts and finishes at the Alyeska Daylodge and links more than a dozen singletrack trails, including Winner Creek, the Iditarod Trail, and Bird-to-Gird, through temperate rainforest with a hand-tram river crossing along the way. It has run each October since at least 2019 as a fundraiser for the Girdwood Nordic Ski Club. Organizers warn it is not a beginner course: miles 22 to 24 are notoriously tough, and race day is usually wet.

Area Map

Course Map

FAQ

When is the 2026 Girdwood Marathon?

The 2026 Girdwood Marathon will be held on Saturday October 3, 2026.

What will the weather be like for the 2026 Girdwood Marathon?

The forecast calls for a high of 49°F and a low of 39°F with a 43% chance of rain.

Historical Weather

Based on 7 years of data
Avg Temp
46°F
L:42° H:47°
RunScore
8
Conditions
Rain Freq
57%
4 of 7 yrs
Wind7mph
Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
cloudy
49°/51°Light
8
2024
partly-cloudy-day
41°/46°Light
8
2023
fog
40°/45°-
8
2022
cloudy
43°/50°-
8
2021
cloudy
34°/37°Light
7
2020
partly-cloudy-day
49°/52°Light
7
2019
partly-cloudy-day
39°/48°-
8