Seaside Marathon
Race Day Weather
Cool conditions, steady pace advised
Runners will face a temperature trend starting at 59°F and rising to 62°F by race end. With a light wind from the SW at 9 mph and high humidity at 79%, maintaining hydration will be crucial. The gently rolling course requires a steady pace, especially as the temperature increases on later laps. Adjusting pace conservatively early will help manage the slightly warmer conditions later on.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Seaside 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 Seaside Marathon 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
Seaside Marathon is an annual road race held in Ventura, California, offering marathon, half marathon, 10K, and 5K distances. The course starts at Solimar Beach and follows the Rincon Highway-1 bike path along the Pacific coastline. It is a USATF-certified, Boston Marathon-qualifying course organized by Elite Sports California. The race's date has shifted between winter and early summer across editions.
