XCelsior Marathon
Race Day Weather
Warming temps, moderate humidity
Runners will face a temperature rise from 60°F at the start to 75°F by the finish, with average humidity around 66%. A light headwind at 9 mph may affect pacing slightly. It's advisable for runners to start conservatively and stay hydrated, especially as the temperature climbs during the race.
Pace Calculator
Get forecast alerts for XCelsior Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The XCelsior Marathon, held at Rockland Lake State Park in Valley Cottage, New York, features a flat, paved course with scenic views of Rockland Lake. Runners complete eight laps totaling 26.2 miles, with a single aid station at the finish line providing hydration and nourishment. The event is part of the Bi-State Challenge, offering participants the opportunity to compete across New York, New Jersey, and Pennsylvania over a single weekend.