Runbelievable 10K
Race Day Weather
Comfortable temps
Starting at 62°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Light winds shouldn't be a major factor for pacing. High humidity (81%) will make it harder to cool down through sweat — increase fluid intake accordingly.
Pace Calculator
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Get your personalized Runbelievable 10K race plan
True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
The Runbelievable 10K covers 6.2 miles along the Long Beach beach path, starting and finishing at 5400 E Ocean Blvd on the same flat, paved course CaliFlow Runs' own course map lists jointly with the event's 5K. The route runs along the Long Beach oceanfront at the same shoreline venue used for several other CaliFlow Runs races throughout the year. It carries the race's superhero-costume theme and is walker- and stroller-friendly.
