- When is Run for a Claus presented by Optima Tax Relief?
- Saturday, December 19, 2026, starting at 8:00 AM.
- How much does it cost?
- Entry starts at $45 before processing fees, and rises to $50 on Oct 17, 2026.
- When does registration close?
- Online registration closes Dec 19, 2026, unless the race fills first.
- Is the entry fee high for California?
- At $45, entry is about 22 percent above a typical 5K in California, which costs $37 right now.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances can I run?
- 1 Mile, 5K.
- How big is it, and how fast?
- In 2023, 2,302 runners finished the 5K; the median finish was 39:45 and the winner ran 15:55.
- Is it a fast course?
- The fastest quarter of the 2023 5K field finished under 32:29, against 30:43 in a typical California 5K, so times here run 6 percent slower.
- Where does it start?
- 8000 Great Park Blvd., Irvine, CA 92618.