Marathons Near San Diego, CA

As of October 6, 2026, Crewable lists 10 upcoming marathons near San Diego, CA from October 2026 to May 2027. The next is The Peak 50K, Marathon & Half Marathon on October 17 in Julian, CA. Registration is open for 4.

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

Race calendar

October 2026

2 races

November 2026

2 races

December 2026

1 race

January 2027

1 race

March 2027

1 race

April 2027

1 race

May 2027

2 races

Quick answers

What is the next marathon near San Diego, CA?

The Peak 50K, Marathon & Half Marathon, on Saturday, October 17, 2026, in Julian, CA. Distances: 50K, Marathon, Half Marathon.

What is the closest marathon to San Diego?

Dingneng Wang in San Diego, CA, about 16 miles from San Diego, on May 8, 2027.

How many marathons near San Diego, CA have open registration?

4 of the 10 list registration as open as of October 6, 2026, including The Peak 50K, Marathon & Half Marathon, Mount Laguna Trail Marathon and The Saddleback Marathon.

What is the busiest month for marathons near San Diego, CA?

October 2026, with 2 of the 10. November 2026 follows with 2.

Race planning

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