The 2026 event has concluded.

XCelsior Marathon

Valley Cottage, NY, USA · June 7, 2026
clear-day66°·79° high·Breezy·Dry
8

Race Day Weather

clear-day
66°at start
80° high
Breezy
Dry

Warm start, rising temps ahead

Runners will face temperatures starting at 67°F and rising to 80°F. With an average humidity of 70% and a light headwind reaching 11 mph, it’s essential to pace conservatively. Hydration should be prioritized early, and gear choices should consider the rising heat as the race progresses.

clear-night9
clear-night9
clear-day8
clear-day8
clear-day8
clear-day7
clear-day6
clear-day6
partly-cloudy-day7
partly-cloudy-day7
rain6

Pace Calculator

Distance: 26.2mi
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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.

Area Map

Course Map

FAQ

When is the 2026 XCelsior Marathon?

The 2026 XCelsior Marathon will be held on Sunday June 7, 2026.

Is the XCelsior Marathon a Boston Marathon Qualifier?

Yes, the XCelsior Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 XCelsior Marathon?

The forecast calls for a high of 81°F and a low of 66°F with a 100% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
74°F
L:68° H:75°
RunScore
7
Conditions
Rain Freq
100%
2 of 2 yrs
Wind12mph
Dew63°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
partly-cloudy-day
72°/80°Light
7
2024
partly-cloudy-day
64°/70°Light
7