From the parking lot take the Parking Lot Spur (PS) to the Chestnut Hill Trail (CH). All intersections are clearly marked, follow CH all the way around loop. To cut back to the parking lot try the Field Spur (FS) where you can try out your go gears. Trail is narrow and there are quite a few blind corners and other riders so don't get caught watching your front wheel or you'll be getting in touch with nature real quick. Many of the riders here have bells to help avoid collisions. The park is a daily fee areas, $3 for DE residents and $6 for others (worth it).