It's right in town (located in Belmont, just off Ralston and Alameda), and somehow that makes you think safe. Think again...if you choose to, you can get quite a bit of excitement here! Technical, very steep climbs, twisty singletrack, crazy little descents and quite a bit of poison oak make this much more challenging than Arastradero Preserve.
If you stick to the main trail (called Lake Road) it's not so bad. But if you want to do some real exploring, I'd strongly recommend riding with someone who knows the place because the network of side trails can get you confused and cause a lot of extra climbing!
Review: Good ride overall, has some pretty challenging spots. Trails are eroding pretty bad in a couple areas, but overall in pretty decent shape. Whoever takes care of it has put in some hard work, for sure.
Review: Great combination of ups and downs, with some steep technical climbs (roots, rocks, ruts, etc. interrupt the momentum). Descents are fun and fast, but sometimes a little short given the climbs. Not a lot of flow. Jumps, switchbacks, bridges, and gaps sprinkled throughout. Definitely ride with someone who knows the trail system, can easily get twisted around.
Review: I'm a beginner and I have a feeling I shouldn't be coming here. Almost killed myself a few times, but loved every second of it. Very narrow singletrack on the ridges of a small canyon. Steep descents full of rocks, gaps and roots kicked my ass. Amazing place in otherwise slightly boring San Francisco area!
Review: This trail has tons of technical singletrack. Their are so many side trails, that you can get lost easily. Most of the singletrack twists and turns, and is very technical. If you want flowy stuff, I wouldn't recommend this.
Review: A lot better than I expected wish the single track section where a little bit longer but they are still a lot of fun am pretty new to single track but if you have some confidence on a bike it a trail you should try
Review: Very nice spot! Nice fireroad to go all the way uphill and singletracks on the way down. Just make sure you talk to locals in order to know where to go, I messed up and had to hike the steep singletracks by foot.