Park Santa Cruz Mtns Loop Grade Miles Total To Go
  0.0 0.0 36.0
1 Castle Rock SP Head north on Skyline Trail to Saratoga Gap Vista Point (parking lot) ↔ 3.1 3.1 32.9
2 Saratoga Gap OSP Cross Hwy 9, continue north on Saratoga Gap Trail (aka Ridge Trail) ↔ 1.7 4.8 31.2
3 Long Ridge OSP At the intersection with Charcoal Road, go straight across ↔ 0.3 5.1 30.9
4 Long Ridge OSP Cross Skyline Blvd, enter gate LR01, take Hickory Oaks Trail ↓ 1.6 6.7 29.3
5 Portola Redwoods SP Go through gate LR08, take Ward Road ↓ 0.9 7.6 28.4
6 Portola Redwoods SP Bear right onto Slate Creek Trail ↓ 0.8 8.4 27.6
7 Portola Redwoods SP Bear right again onto Slate Creek Trail towards the trail camp ↓ 0.8 9.2 26.8
8 Portola Redwoods SP Cross Slate Creek, and head up towards the trail camp ↑ 0.9 10.1 25.9
9 Portola Redwoods SP From the trail camp, go left towards Summit Trail ↔ 1.2 11.3 24.7
10 Portola Redwoods SP From the summit, go left on Summit Trail towards Park HQ ↔ 0.9 12.2 23.8
11 Portola Redwoods SP About 1/2 mile before Park HQ,  go left on the service road ↔ 0.2 12.4 23.6
12 Portola Redwoods SP Take the service road past Iverson's Cabin up to Old Haul Road ↔ 0.2 12.6 23.4
13 Pescadero Creek CP Cross the Old Haul Road and take the Portola Trail ↑ 1.4 14.0 22.0
14 Pescadero Creek CP Continue up the hill on the Butano Ridge Trail ↑ 1.7 15.7 20.3
15 Pescadero Creek CP Take a left towards Big Basin, and enjoy the scenic overlook ↔ 0.6 16.3 19.7
16 Pescadero Creek CP Continue on past the overlook ↔ 0.2 16.5 19.5
17 Private land (hiking OK) Go left on the Basin Trail Easement ↔ 0.5 17.0 19.0
18 Private land (hiking OK) Cross the road and pick up the easement trail on the other side ↑ 1.0 18.0 18.0
19 Big Basin SP Cross China Grade Road into Big Basin SP ↓ 0.1 18.1 17.9
20 Big Basin SP Go left on Basin Trail ↔ 3.1 21.2 14.8
21 Big Basin SP Left on Skyline-to-the-Sea back to China Grade Road ↔ 0.1 21.3 14.7
22 Big Basin SP Cross the road, take Skyline-to-the-Sea down to Hwy 236 ↓ 0.5 21.8 14.2
23 Big Basin SP Cross Hwy 236, and continue on Skyline-to-the-Sea ↔ 0.9 22.7 13.3
24 Big Basin SP Continue up Skyline-to-the-Sea towards Waterman Gap (Hwy 9 & 236) ↑ 3.9 26.6 9.4
25 Castle Rock SP Continue up Skyline-to-the-Sea past Waterman Gap Trail Camp ↑ 2.6 29.2 6.8
26 Castle Rock SP Right on Beekhius Road ↓ 0.4 29.6 6.4
27 Castle Rock SP Left on Saratoga Toll Road ↔ 1.0 30.6 5.4
28 Castle Rock SP Right on Travertine Springs Trail towards Castle Rock Trail Camp ↔ 2.1 32.7 3.3
29 Castle Rock SP Continue on the fire road to Castle Rock Trail Camp ↑ 0.7 33.4 2.6
30 Castle Rock SP Back to trailhead via Saratoga Gap Trail ↑ 2.6 36.0 0.0
Disclaimer:  All mileages are approximate; all grades are "best guess" -- total elevation is ~6000 feet