The San Andreas Segment of the Crystal Springs Regional Trail is the Northernmost part of the trail, starting from Hillcrest Blvd and ending at the intersection of San Bruno Ave and Skyline Blvd. The first 0.6 miles consists of nice, smooth rolling single track before turning into a paved trail at Larkspur Drive. The trail runs parallel to San Andreas Lake and Skyline Blvd with a pretty nice view of the lake. There are several little rolling hills, however, it drops about 100 feet before reaching the terminus.
This segment would be more suitable for cyclists, walkers and runners, not necessarily the best place to hike as it's mostly paved an near the highway.
Check out the Triplog.
This hike is listed as One-Way.
When hiking several trails on a single "hike", log it with a generic name that describes the hike. Then link the trails traveled, check out the example.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.