» Official Trail Map: Good quality map showing various trails.
» Redwood Hikes Map: Bay Area Trail Map: Saratoga to Big Basin, First edition, 2010. This is an excellent map sold by Dave Baselt ($6.95 in Dec 2011). This map is useful for exploring many parks in this area. Highly recommended for avid hikers.
Trailhead: Parking lot near Park HQ.
To Indian Rock (4.5 miles): From the parking lot near Sanborn Park HQ, follow Sanborn Trail (1.0 + 1.2 + 0.6 miles) → Skyline Trail (1.6 miles) to reach a point directly across Castle Rock park entrance. Turn right and follow a short trail (0.15 miles) to reach Indian Rock. The rock can be circumnavigated by following a trail that goes around it. Indian Rock is an interesting rock structure, worthy of exploration.
To Sanborn Park HQ (4.5 miles): From Indian Rock, retrace your steps back to the spot across Castle Rock park entrance (0.15 miles). Then turn left onto Skyline Trail (1.6 miles) → left on Sanborn Trail (0.6 miles) → San Andreas Trail (1.5 + 0.4 + 0.4 miles) to parking lot.
Notes: The hike may be started at Castle Rock park entrance (free parking outside the park, along Highway 35).