Crewable logoCrewable

50K Races Near San Francisco, CA

As of October 6, 2026, Crewable lists 16 upcoming 50K races near San Francisco, CA from November 2026 to August 2027. The next is Lake Chabot Trail Run on November 7 in Castro Valley, CA. Registration is open for 3.

Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites

Race calendar

November 2026

3 races

  3. Quad Dipsea

    Mill Valley, CA
    28.4 mi
    Registration open

December 2026

3 races

January 2027

1 race

February 2027

2 races

March 2027

2 races

  2. The Big Alta

    Marinwood, CA
    50K
    Open until Mar 14, 2027from $160

April 2027

1 race

May 2027

3 races

August 2027

1 race

Quick answers

What is the next 50K race near San Francisco, CA?

Lake Chabot Trail Run, on Saturday, November 7, 2026, in Castro Valley, CA. Distances: 50K, Marathon, 30K.

What is the closest 50K race to San Francisco?

Hunter S. Thompson Fear & Loathing in San Francisco, CA, about 2 miles from San Francisco, on December 6, 2026.

How many 50K races near San Francisco, CA have open registration?

3 of the 16 list registration as open as of October 6, 2026, including Lake Chabot Trail Run, Quad Dipsea and The Big Alta.

What is the busiest month for 50K races near San Francisco, CA?

November 2026, with 3 of the 16. December 2026 follows with 3.

Nearby cities

Sacramento20Auburn11Lake Tahoe11Reno, NV7Mammoth Lakes11Los Angeles17San Diego11

Nearby states

Arizona24Nevada7Oregon21

More ways to browse

50K races in California6650K races in the US538
Race planning

Plan your San Francisco race

Aid stations, cutoffs and pacing in one free plan. Crew invites and race-day updates come with a Race Pass.

Plan a race free