100 kmTrail🇺🇸 Stinson Beach, United States

Miwok 100K

Saturday, 1 May 2027In 6 months · Start 05:00

Loops through the Marin Headlands and Mount Tamalpais from Stinson Beach on the Dipsea and Miwok trails, with Pacific ridgeline views, redwood canyons and steep climbs on a field capped at 400 runners.

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Facts checked 24 Oct 2026 against miwok100k.com, miwok100k.com, runsignup.com.

Elevation gain

3,505 m

Mountain · ↓ 3,505 m

Start altitude

30 m

above sea level, from terrain data

Temp at start

10°C

Peaks around 16°C

Entry fee

≈ $310

Open entry

Finishers

—

typical year

Course

Loop

15.5h cut-off

Getting thereFly into SFO (San Francisco), about 39 km from the start

Plan your trip to Stinson Beach

Race weekends book up early. Searches are set for the race dates.

Hotels near the start lineFri 30 Apr – Sun 2 May · 2 nights · closest to the start firstSee hotels on Booking.com Flights to Stinson BeachArrive Thu 29 Apr, fly home Mon 3 MaySee flights on Google Flights

Things to do in Stinson BeachKlook Mobile data in United StatesAiralo Airport transfer from SFOKiwitaxi Rent a carEconomybookings

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Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Mountain: about 3,505 m of climbing and 3,505 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

10°C

Peak during race

16°C

Humidity

79%

Chance of rain

Wind

10 km/h

1 May in past years

Historical averages for 1 May ±3 days, 2016–2025, from 05:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Finish times by age group

No data yet. We’re collecting age-group results race by race.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Guides for this race

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Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

<a href="https://irun42.com/race/miwok-100k" title="Miwok 100K on iRun42"><img src="https://irun42.com/badge/miwok-100k.svg" width="300" height="120" alt="Miwok 100K: course, elevation and race-day weather on iRun42" /></a>

Around the same time

All races in May 2027 →

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