The Retro Run 5K
Race Day Weather
Warm start, warming through the race, high humidity
A warm 71°F start means heat management is critical — consider dialing back your goal pace by 10-20 sec/mi. Temperatures rising to 83°F through the course will gradually increase perceived effort in the second half. High humidity (82%) will make it harder to cool down through sweat — increase fluid intake accordingly.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for The Retro Run 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 The Retro Run 5K race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
The 5K is a single out-and-back along the paved beach path at Alamitos Beach in Long Beach, starting and finishing at the same spot. The flat course never leaves the beach path and stays open to other users, so runners keep to the pedestrian side. Turns are marked with chalk, a sign and a flag.
