Is the swim portion wetsuit legal?

Yes, the water temperature averages 65°F, making the swim portion wetsuit legal.

What is the nearest airport?

The closest airport is John Wayne Airport (SNA).

Are there discounts available for wetsuits?

Yes, you can use the discount code 2026CALTRI for 20% off at blueseventy, though Fusion wetsuits are excluded from this offer.

All races

3 weeks out

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All races

3 weeks out

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Sunday, November 1, 2026Newport Beach, CA400 Yards – 50K

Experience a piece of history at the 2026 Optimism Cal Tri Newport Dunes, the world's longest-running triathlon held at its original location since 1978. This prestigious event serves as the Cal Tri Events National Championship, drawing a competitive field of 1,500 to 2,000 participants. Athletes can choose from 12 diverse event options, ranging from Olympic to Sprint distances across various formats like Triathlon, RunBikeRun, and SwimRun. The course takes place in the beautiful Newport Beach area, offering a classic Southern California backdrop. With average air temperatures between 60°F and 73°F and wetsuit-legal water, it provides ideal conditions for a late-season race. Beyond the competition, visitors can easily explore nearby iconic attractions like Disneyland and the charming Balboa Island Ferry.