Yellow trail is a loop of 2/3 single track and some double track and power line area. clock wise It starts near the river, with a big steep climb followed by a 2nd longer climb. there's a nce flowy middle part on the spine of a hill, dropping down to near the spillway. from there you follow trail on mostly double track, with one more major climb. it finally ends 100 yrds up the road from start. Taken CCW climbs are generally tamer.