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Marin Ultra Challenge

Name: Marin Ultra Challenge
Start: 2025-03-08
End: 2025-03-08
Location: Sausalito

Sausalito, United States • 8 Mar 2025

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, featuring a 50-mile and a 50K course. Scheduled for March 8, 2025, the event showcases some of the most scenic trails in the region, including the Marin Headlands, Mt. Tamalpais, and Muir Woods.

Participants can expect challenging terrain with significant elevation gains—approximately 11,000 feet for the 50-mile race. The race begins at Rodeo Beach and offers a mix of fire roads and technical single-track trails. The event promotes a cupless approach, encouraging runners to carry their own hydration solutions. Visit the organization's website for the most recent information.

United States California Sausalito

Race information

Website

50 mi

10550 m+

50 Mile

50 km

6000 m+

50k

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Feb 22

Montara Mountain Trail Run

Pacifica - 15 mi from Sausalito

...

The Montara Mountain Trail Run is an exciting running event taking place in Pacifica, California, featuring a variety of race distances including a 10K, Half Marathon, 20-mile, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Set against the stunning backdrop of Montara..

Sunday Mar 9

Zoom Angel Island

Belvedere Tiburon - 1 mi from Sausalito

Zoom Angel Island is a running event taking place on Angel Island, California, featuring multiple race distances: 5 miles, 10 miles, and 15 miles, along with a free Kid's Run for children aged 6 and younger. The event offers scenic trails with stunning views of Marin County and San Francisco. Partic..

Fri - Mon Mar 14-17

The Rattlesnake Ramble

Santa Venetia - 10 mi from Sausalito

The Rattlesnake Ramble is a running event featuring a 5K, 10K, and Half Marathon, available in both live and virtual formats. Scheduled for March 14-17, 2025, the event takes place at China Camp State Park in Santa Venetia, California. Participants can choose from various trail courses, each offerin..

Sat - Sun Mar 22-23

The Big Alta

Lucas Valley-Marinwood - 13 mi from Sausalito

28 km

50 km

The Big Alta is an exciting trail running event taking place in Marin County, California, organized by Freetrail and Daybreak Racing. Participants can choose between two challenging distances: a 50K and a 28K, both featuring scenic single-loop courses that showcase breathtaking views of the San Fran..

Saturday Mar 22

Redwood (Spring) Trail Run

Oakland - 12 mi from Sausalito

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The Redwood (Spring) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, 5-mile, 30K, Marathon, and 50K, along with youth categories and a free Kid's Run. Set against the stunning backdrop of Redwood Regional Pa..

Sunday Mar 30

Lag Bon 10K

Fairfax - 10 mi from Sausalito

10 km

The Lag Bon 10K is a trail running event taking place in Fairfax, California, aimed at raising awareness and funds for the global water crisis through the Safe Water Now program by Evidence Action. Set against the scenic backdrop of Marin County's reservoirs, the course features a mix of technical t..