Suffolk County Marathon
Race Day Weather
Cool start, warming finish
Runners will face a temperature increase from 41°F at the start to 52°F by the finish, with a light headwind throughout. Average humidity is a comfortable 46%, ensuring good conditions for racing. With tailwinds in the early and middle segments, pacing can be aggressive early, but adjustments may be needed in the later miles where headwinds will challenge runners.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Suffolk County 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 Suffolk County 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
The Suffolk County Marathon is an annual marathon, half marathon, 10K and 5K race weekend held each October on Long Island, New York, with proceeds benefiting local veterans' services. The Sunday races start in Babylon Village and run east along Montauk Highway before crossing the Robert Moses Causeway to Captree and back, finishing at Gardiner County Park in Bay Shore. A companion 5K and kids' fun run take place the day before at Gardiner County Park. The race has run since 2015 under organizer Race Awesome, and its marathon and half marathon courses are USATF certified, with the marathon serving as a Boston Marathon qualifier.
