The Coastal Delaware Running Festival April 10-11, 2027 will consist of a 5k on Saturday and on Sunday, a 9K, Half Marathon & a Full Marathon (Boston Qualifier). All four courses are flat and fast and take in the most beautiful landmarks of coastal Delaware, including a Rehoboth Beach Boardwalk start and finish, numerous Delaware State Park paths and landmarks, historic Lewes, DE and more.  Finishing Line Celebration with plenty of complimentary beer, food, music and cheer! Proceeds to benefit the Delaware Seashore Preservation Foundation and other local charities. Register Today