Castle Rock State Park and Sanborn County Park contain some of the finest sandstone bouldering and climbing in California. Just over an hour away from San Francisco, this world class bouldering area is the Bay Area's finest.
This guide contains over 230 boulder problems including many previously unpublished gems in little known areas, alongside many of the classics in almost every known area!
Turn by turn, gps guided navigation leads you right to your chosen sector, where interactive overview maps and photographs assist with orientation.
Sectors in alphabetical order:
| Biddles Area | 37 climbs in 5 sectors |
| Castle Rock Area | 75 climbs in 9 sectors |
| Goat Rock Area | 23 climbs in 3 sectors |
| Indian Rock Area | 83 climbs in 7 sectors |
| Road Kill Rock Area | 18 climbs in 3 sectors |
| Sunnyvale Mountain Area | 11 climbs in 3 sectors |
| Waterfall Area | 10 climbs in 2 sectors |
