Upcoming Duathlons in California

Endurance Grid lists 19 duathlons in California, from November 2026 to October 2027 across 15 cities.

19
Races
15
Cities

Duathlon Races in California

The duathlon race calendar in California is busiest in April, June, and August, with races most often in San Diego and Fresno.

What a duathlon is

A duathlon is a triathlon without the swim: you run, transition to the bike, ride, then transition back and finish on foot. Two disciplines, two timed transitions, no open water — which makes it one of the most accessible ways into multisport racing.

Most US duathlons run one of two distances. A sprint is roughly a 5K run, 20K bike, and 2.5K run — short enough to finish on a first attempt. The standard, often called Olympic, doubles the front end to a 10K run, 40K bike, and 5K run. Exact distances vary by organizer.

Frequently Asked Questions

How many duathlons are in California?
Endurance Grid's Race Calendar lists 19 upcoming duathlons in California across 15 cities, from November 2026 to October 2027.
What duathlon distances are offered in California?
Duathlons in California include Olympic and Sprint distances.
When is duathlon season in California?
Duathlon season in California runs spring through fall. Of the upcoming duathlons on Endurance Grid's Race Calendar, the most are in April and June.
Which California cities have duathlons?
Duathlons in California are held in San Diego, Playa Del Rey, Castaic, Chula Vista, Delano, Fresno, Friant, Lakeshore, Mission Viejo, and Newport Beach, plus 5 other cities.

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