Cinco de Mayo Half Marathon
Race Day Weather
Mild conditions, steady pace expected
Runners will face mild temperatures starting at 59°F and only rising to 61°F by the finish. With light wind at 6 mph and high humidity at 75%, pacing should remain steady throughout. Given the humidity, it's advisable for runners to stay hydrated and consider a conservative start. The flat course will allow for consistent effort without significant elevation changes.
Pace Calculator
Get forecast alerts for Cinco de Mayo Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Cinco de Mayo Half Marathon race plan
Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
Cinco de Mayo Half Marathon is a 5K, 10K, and half marathon staged on Long Beach's paved beach path near 5400 E Ocean Blvd. The course runs along the oceanfront and is advertised by the organizer as flat and USATF certified. CaliFlow Runs, a Long Beach race series founded by run coach Angela Holder, debuted the event in Venice Beach on May 3, 2025, before relocating it to Long Beach for the May 1, 2027 edition.