Gravel Grape Crusher. April 18 @ 8:00 am - 5:00 pm ... Choose a 50K or 100K ride over road, gravel, single track, double track and fields. The ride: Both routes are a mix of gravel, double track, single track, field and road, with features in Fair Hill, White Clay, Redd Park and White Clay Preserve. Three rest stops for the 100K & one for the 50K.