Castle to River Run - Garrison, NY

Castle to River Run - Garrison, NY

The Castle to River Run takes place in Garrison, NY on October 25, 2026. The event is a fundraiser for The Friends of Philipstown Recreation, a 501c3 organization that supports recreational programs and facilities in Cold Spring, Garrison, Nelsonville and Continental Village, NY.

Distances offered:

• Half marathon
• 5K run
• 3/4 mile kids fun run (race-day registration, $5)

The half marathon route passes through Hudson Highlands State Park, descends to the Hudson River, and goes past Osborn Castle on the Castle driveway with special permission for registered participants on race day. Sections of the course cross private property; only registered runners may access those sections during the race and spectators are restricted from those areas. Training on the trails must follow posted signs and avoid Castle property.

Course surfaces and terrain vary: single track and double track trails, dirt roads, and some paved sections. Most of the course is runnable with some technical stretches and a few larger hills. The 5K is a mostly flat loop on dirt trail and grass with a couple of hills.

There is one aid station available to half marathon runners that is passed twice during the race; it will offer water, sports drink, and basic food items but not gels. The 5K has no aid station. Parking is at the Philipstown Recreation Department at 107 Glenclyffe Drive. All entrants receive a race t-shirt; signing up by October 4 guarantees a shirt size. The event is held rain or shine and refunds are not provided except if organizers cancel the race. Visit the organization's website for the most recent information.