“The first mile is a challenging 750' climb, all rideable if you're in shape.
— Lance Buck
Starting from the parking area, you have two choices. The trail takes you across the creek. However, if the creek is high, or you don't want to wade, the other option is to go around it by walking across the Highway 16 bridge (the High Bridge) to the other side. Once there, you can follow a deep path around to the other side of the creek to intersect the main trail. It's a little longer, but if you don't feel comfortable rock-hopping, you can do this route.
The High Bridge Trail slowly switchbacks up the ridge to the ponds at the top. Rather than being an old ranch or fire road, this trail was actually designed and built as a trail, so it is not very steep and is nice and narrow, as a trail should be.