2026 Optimism Cal Tri Triathlon
From publicly posted calendar Checked 12 hours ago
About this event
One of 1 upcoming event at Newport Dunes Waterfront Resort & Marina, and 3,407 across Orange County.
Started in 1978 as the Human Race Triathlon, Cal Tri Newport Dunes is the longest-running triathlon in the world, operating from the same location. Whether you’re interested in outdoor adventures or family-friendly activities, this race has it all. All levels of participants are invited to take part in the 2026 CalTriathlon. Started in 1978 as the Human Race Triathlon, Cal Tri Newport Dunes is the longest-running triathlon in the world operating from the same location. Also started in 1978 was the Ironman World Championship Triathlon Oahu but moved to Kailua-Kona, Hawaii in 1981. This serves as the Cal Tri Events National Championship Race with registration in the 1500-2000 range. There are 14 different events held during this one-day triathlon. Here’s a video recap of the event:
