Running Events in Costa Mesa, CA

• Pan Pacific Swimming Championships

  Wednesday, August 12, 2026 · 8:00 AM

  William Woollett Jr. Aquatics Center, 4601 Walnut Avenue, Irvine, CA

  $33.85–$247.27

• Toyota National Championships

  Tuesday, July 28, 2026 · 8:00 AM

  William Woollett Jr. Aquatics Center, 4601 Walnut Avenue, Irvine, CA

  $30–$180

• Santa Claus For A Cause 5K/10K

  Saturday, December 12, 2026 · 8:00 AM

  17851 Pacific Coast Hwy Huntington Beach, CA

  $36.20–$47.20

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