Trails range from easy to strenuous.
The park is about 65 miles south of San Francisco. From Santa Cruz travel approx 25 miles northwest via Highways 9 and 236 to reach Park Headquarters. Park Headquarters is 9 miles north of the town of Boulder Creek on State Hwy 236. All roads into Big Basin are curvy. The Rancho Del Oso coastal unit of Big Basin is accessible on State Route 1, about 20 miles north of the city of Santa Cruz.
http://www.tripleblaze.com/trail.php?c=3&i=3482