Miwok 100K

Stinson Beach, CA, USA • May 2, 2026
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partly-cloudy-day Partly cloudy throughout the day.

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

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When is the 2026 Miwok 100K?

The 2026 Miwok 100K will be held on Saturday May 2, 2026.

What is the time limit for the Miwok 100K?

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

Historical Weather

Based on 3 years of data
Avg Temp
54°F
L:51°H:61°
RunScore
8
Conditions
Rain Freq
67%
2 of 3 yrs
Wind13mph
Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2025 Miwok 100K

Partly cloudy throughout the day.

2025
partly-cloudy-night
52°/64°-
7

2024 Miwok 100K

Partly cloudy throughout the day with rain in the morning and afternoon.

2024
cloudy
49°/56°Light
6

2023 Miwok 100K

Partly cloudy throughout the day with morning rain.

2023
cloudy
53°/62°Light
8
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You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

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