Triathlons in California
California has 43 upcoming triathlons scheduled for 2026. That is the 5th-highest event count for triathlons of any state. Most of the calendar falls in the warmer months: 30 of 43 races (70%) take place between May and September, with June (11 events) the busiest month. No single city dominates the calendar. San Diego leads with 4 races, followed by Santa Cruz (3), Castaic (2), and Lakeshore (2). The remaining 74% of the calendar is spread across smaller cities.
Triathlons by month in California
Jun (11) · Aug (8) · Sep (7) · Oct (5) · Jul (3) · Nov (3) · Mar (2) · Dec (2) · Apr (1) · May (1)
Notable California events
- Escape from Alcatraz Triathlon — San Francisco, June 15 — open-water triathlon
- IRONMAN California — Sacramento, October 18 — full Ironman triathlon
Showing 24 of 43
Triathlon
Escape From Alcatraz Triathlon
San Francisco, CA
Escape From Alcatraz Triathlon
Triathlon
2026 Black Butte Triathlon
Corning, CA
2026 Black Butte Triathlon
Triathlon
Cal Tri Castaic Lake
Castaic, CA
Cal Tri Castaic Lake
2026 Wolfpack Youth Super Sprint Aquathlon Race Sanctioned by USA Triathlon (USAT)
Triathlon
Huntington Lake Triathlon
Lakeshore, CA
Huntington Lake Triathlon
Triathlon
San Diego International Triathlon
San Diego, CA
San Diego International Triathlon
Triathlon
2026 San Diego International Triathlon & Waterfront 5K
San Diego, CA
2026 San Diego International Triathlon & Waterfront 5K
Triathlon
Cal Tri La Crema
Guerneville, CA
Cal Tri La Crema
2026 Solana Beach Triathlon & Duathlon and Solana Beach 5K
