Runbelievable 5K
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
Get forecast alerts for Runbelievable 5K
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 Runbelievable 5K 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 5K covers 3.1 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 10K. The route follows the Long Beach oceanfront at a shoreline venue shared with several other CaliFlow Runs races. Superhero costumes are encouraged, and the flat surface welcomes walkers, strollers, and leashed dogs.
