Actually the starting point in Corona is at the Golf course. You take 91 fwy, exit Green River and follow until road ends at Golf course, about 3/4 of a mile from freeway exit. Everybody parks there (parallel to freeway), at the starting point. The first 16 miles is the best part of the trail, nice parks (including Featherly), shade, water and rest points. Real nice, comfortable ride. Eventually they will have starting point at Prado Dam but not until late 2006, still under construction.