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California Duathlon Calendar 2026-2027

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Explore the best duathlons in California for 2026-2027! Our updated list features 20 exciting races across the region. Find your next race in California below and join the running community at these great events!

January 2027
Jan
2
Sa

The New Year's Duathlon

Trail Run Duathlon New Years Duathlon - Indi... 2 5 2 mi New Years Duathlon - 2-pe... 2 5 2 mi
Jan
23
Sa

The Dirty Duathlon

Cross Duathlon The Dirty Duathlon 2 6 2 mi Dirty Duathlon - 2-person... 2 6 2 mi
February 2027
Feb
6
Sa

The Double Duathlon

Duathlon The Double Duathlon 2 5 2 5 2 mi Double Duathlon - 2-perso... 2 5 2 5 2 mi
Feb
7
Su

Pasadena Triathlon

Triathlon Duathlon DUathlon 3 3 3 mi Reverse Triathlon 3 9 mi 150 m
March 2027
Mar
27
Sa

Spring Fling 5k - Fresno

Duathlon Olympic 2.1 11.75 2.1 mi Olympic 3.1 11.75 3.1 mi
Monthly updates for California

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April 2027
Apr
10
Sa

Napa Valley Spring Triathlon

Triathlon Duathlon Open 100 m 2 1 mi Sprint 750 m 12.4 3.1 mi Olympic 1500 m 24.8 6.2 mi Middle distance 1.2 56 13.1 mi
Apr
25
Su

Orange County Multi-Sport Festival

Triathlon Duathlon Super sprint 300 m 5 2.5 km Sprint 750 m 20 km Sprint 750 m 20 5 km Olympic 1500 m 40 km
May 2027
May
2
Su

Cal Tri Ventura

Triathlon Duathlon Aquathlon Sprint 400 m 5 km Olympic 0.93 mi 10 km Sprint 400 m 9 mi Sprint 5 22 5 km
May
2
Su

Spring Sprint Triathlon

Triathlon Duathlon Aquathlon Multisport Sprint 0.25 mi 5 km Itsy Bitsy Triathlon 100 m 3 0.75 mi Super sprint 200 m 6 1.5 mi Sprint 0.25 10 mi
June 2027
Jun
27
Su

San Diego International Triathlon

Triathlon Duathlon Aquathlon Sprint 500 m 5.6 km Sprint 500 m 20 km Sprint 500 m 20 5.6 km Sprint 1 mi 20 5.6 km
July 2027
Jul
25
Su

Solana Beach Triathlon & 5K

Triathlon Duathlon Aquathlon Sprint 0.25 mi 5 km Sprint 0.25 9 mi Sprint 0.25 9 mi 5 km Sprint 1 9 mi 5 km
August 2027
Aug
28
Sa

Santa Barbara Triathlon & Beach Festival

Trail Run Triathlon Duathlon RUN-SWIM-RUN (200,400,200... 200 400 200 m Sprint 500 m 6 2 mi Sprint 1 6 2 mi SB 25 0.75 20 5 mi
Aug
29
Su

BRA Run - Los Angeles

Duathlon Bike + 5k Run 14 mi 5 km Bike + 13K Run 14 mi 13 km
September 2027
Sep
5
Su

Mount Shasta Tinman Triathlon

Triathlon Duathlon Sprint 740 m 16 3.2 mi Individual Duathlon 3.2 16.67 3.2 mi Relay Duathlon 3.2 16.67 3.2 mi
Sep
12
Su

Pacific Coast Triathlon

Trail Run Triathlon Duathlon Sprint 0.5 12 mi Sprint 0.5 12 3 mi Sprint 0.5 12 3 mi Olympic 1500 m 40 km
October 2027
Oct
3
Su

Cal Tri LA

Triathlon Duathlon Aquathlon Sprint 400 m 5 km Sprint 400 m 9 mi Sprint 5 19 5 km Olympic 0.93 24.8 mi
Oct
16
Sa

Lake Hodges Trail Festival

Trail Run Cross Duathlon 5 km 10 km ... 25 km 50 km
Oct
17
Su

Lake Hodges Trail Duathlon

Duathlon Trail Duathlon- Run | Bik... 6.2 13.7 3.1 mi TEAM Trail Duathlon- Run... 6.2 13.7 3.1 mi
Oct
23
Sa

Napa Valley Fall Triathlon

Triathlon Duathlon Open 100 m 2 1 mi Sprint 750 m 12.4 3.1 mi Olympic 1500 m 24.8 6.2 mi Full distance 1.2 56 13.1 mi
November 2027
Nov
7
Su

Cal Tri Newport Dunes

Triathlon Duathlon Aquathlon Multisport Sprint 400 m 5 km Olympic 0.93 mi 10 km Sprint 400 m 9 mi Sprint 5 13 5 km
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