Miwok 100K

Stinson Beach, CA, USA · May 1, 2027
partly-cloudy-day53°·64° high·Breezy·Dry
8
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Race Day Weather

partly-cloudy-day
53°at start
64° high
Breezy
Dry

Cool start, steady climb ahead

Runners will face a temperature increase from 53°F to 64°F during the race, with average humidity at 66%. A moderate tailwind will assist from miles 1-3 and 6-11, while headwinds will challenge runners between miles 19-26 and 31-44. Given the elevation changes and humidity, pacing adjustments are recommended, especially on the tougher climbs from miles 1-3 and 14-17.

Race day forecast available in 223 days
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Pace Calculator

Distance: 62.1mi
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Race Info

The Miwok 100K Trail Race is a 62.2 miles (100.1 km) long ultramarathon that takes place annually in southern Marin County, California, typically on the first Saturday of May.

The race starts and ends in the town of Stinson Beach. Almost all of the course is on fire roads and single-track trails, first to the south of Stinson Beach and then to the north. Runners climb a total of approximately 11,800 feet (3,600 m).
Wikipedia

FAQ

When is the 2027 Miwok 100K?

The 2027 Miwok 100K will be held on Saturday May 1, 2027.

What is the time limit for the Miwok 100K?

The time limit for the Miwok 100K is 15.5 hours.

What will the weather be like for the 2027 Miwok 100K?

The forecast calls for a high of 63°F and a low of 53°F with a 2% chance of rain.

Historical Weather

Based on 4 years of data
Avg Temp
54°F
L:52° H:61°
RunScore
8
Conditions
Rain Freq
50%
2 of 4 yrs
Wind12mph
Dew46°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
54°/62°-
8
2025
partly-cloudy-night
52°/64°-
7
2024
cloudy
49°/56°Light
6
2023
cloudy
53°/62°Light
8