Take on a breathtaking course through the Rockefeller State Preserve, where trails built over a century ago wind past stunning scenery at every turn! Start and finish at Rockwood Hall, with sweeping views of the Hudson River and the Palisades, just off Route 9 in Sleepy Hollow, next to Phelps Hospital. Both the half-marathon and marathon are single-loop adventures on wide, groomed carriage roads, with the marathon showcasing nearly all of the park’s signature sights. Climb and roll past fields,…