14. Crazy Pete's Road and Valley View Trail.
Crazy Pete's Road (paved at the beginning) travels 1 mile to a bridge over a cascading stream. Retrace your steps 100 yards, then loop back on Valley View Trail.
WHERE: Coal Creek O.S.P., east side State 35, 1 3/4 miles north of Page Mill Rd. and 5 1/2 miles south of State 84 (park in pullout just south of Crazy Pete's Rd.; walk 1/2 mile on Crazy Pete's to trail).
DISTANCE: 2 1/4 miles.
DIFFICULTY: Easy.
15. Clouds Rest Trail and Meadow Trail.
A stroll around flower-dotted Coal Creek Meadow provides expansive views of the South Bay.
WHERE: Coal Creek O.S.P.; park at Caltrans Vista Point, east side State 35, 1 mile north of Page Mill Rd. and 6 miles south of State 84. Walk 50 yards north to Clouds Rest Rd. Turn right and walk 1/4 mile to trail.
DISTANCE: 2 1/2 miles.
DIFFICULTY: Easy.
16. Bay Area Ridge Trail, Hawk Trail, and Mindego Ridge Trail.
Watch the grasses wave in unison in the spring breeze, and scan the skies for hawks.
WHERE: Russian Ridge O.S.P.; park at Caltrans Vista Point, east side State 35, 1 mile north of Page Mill Rd. and 6 miles south of State 84. Trailhead is across State 35.
DISTANCE: 2 miles.
DIFFICULTY: Easy.
17. Borel Hill Trail and Ancient Oaks Trail.
The wildflowers on the slopes of Borel Hill will stop you in your tracks. So will the view from the 2,572-foot summit. Loop back through an enchanted forest filled with gnarled, moss-covered oaks.
WHERE: Russian Ridge O.S.P.; from junction of State 35 and Page Mill Rd., 7 1/4 miles south of State 84, drive 100 yards west on Alpine Rd. to parking lot and trailhead on right.
DISTANCE: 3 1/2 miles.
DIFFICULTY: Easy to moderate.
18. Old Page Mill Trail.
Follow the path of Old Page Mill Trail, built in 1868 for hauling lumber. Near Alpine Pond, look for bedrock mortars. After 1 mile, the pavement disintegrates to a narrow trail.
WHERE: Skyline Ridge O.S.P.; from junction of State 35 and Page Mill Rd., 7 1/4 miles south of State 84, drive 100 yards west on Alpine Rd. to parking lot and trailhead on right.
DISTANCE: 3 1/2 miles.
DIFFICULTY: Easy.