The 2025 event has concluded.

Miwok 100K

Stinson Beach, CA, USA • May 3, 2025
TopDescriptionCourseCommunity

Subscribe

Get updates on the Miwok 100K race forecast and be the first to know if the forecast shifts.

Text Updates

Maximum one update per day. Standard messaging rates apply. Currently only supports USA, UK, and Canada.

Phone Number

Email Updates

By submitting your email you agree to receive weather forecasts and racecast.io updates.

partly-cloudy-day Partly cloudy throughout the day.

Hoka cushion, in a slide, with some choice colors. Hoka One One Recovery Slides.When you buy through our links, we may earn a commission.

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

Area Map

Course Maps

FAQ

Ask a Question about the Miwok 100K

Racecast Concierge (free during beta)

Ask a question about the Miwok 100K and we'll do the hard part and find the answer for you within 48 hours.

By using Racecast Concierge, you agree to receive email alerts pertaining to the Miwok 100K and general racecast.io updates.

When is the 2025 Miwok 100K?

The 2025 Miwok 100K will be held on Saturday May 3, 2025.

What is the time limit for the Miwok 100K?

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

Community

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:

OR

Historical Weather & Results

RunScore
Run Score: 8
Temp
53°F
Min/Max
51°/59°F
Dew
44°F
Days of Rain
2/2
Wind
10mph
Tap a row for details.
YearLow / HighRain

Miwok 100K 2024 Weather History

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

2024
cloudy
49°/ 56°Light
Run Score: 6

Miwok 100K 2023 Weather History

Partly cloudy throughout the day with morning rain.

2023
cloudy
53°/ 62°Light
Run Score: 8
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:

OR
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:

OR