Facebook Pageview

Hours, Locations and Fees

Open year-round, Sugarloaf Ridge State Park straddles the boundary between Sonoma and Napa Counties, about 1.5 hours north of San Francisco, 7 miles east of Santa Rosa, and 16 miles north of the town of Sonoma.

2605 Adobe Canyon Rd, Kenwood 95452

Park Hours

  • Sugarloaf Ridge is open year-round!
  • Day-Use Area: open daily 6 AM to 8 PM
  • Camping Area: open daily

Visitor Center Hours

The Visitors Center is open Saturday and Sunday from 9am to 5pm, as well as Friday evenings in the summer.

When to Visit

  • Sugarloaf Ridge is open year-round!
  • Sugarloaf Ridge is busiest in the spring and fall.
  • Summers at Sugarloaf Ridge are hot and dry. High temperatures are often in the 90s, cooling down in the evening to the 40s. Ocean fog sometimes penetrates this far inland.
  • Most of the park’s forty inches or so of rain come between November and April. Light snow falls occasionally. Wintertime low temperatures drop into the 30s with daytime highs in the 50s and 60s. After the winter rains, there is a picturesque 25-foot waterfall along Sonoma Creek below the campground.
  • See the wildflowers: In the spring, the park comes alive with wildflowers including California poppies, cream cups, lupine, penstemon, buttercups, several varieties of pea, shooting stars, trillium, as well as Indian warrior flowers. Less common are golden fairy lantern, zigadene, and fritillaria. In the early summer come clarkia, scarlet larkspur, farewell-to-spring, Mariposa lilies, monkey flowers, and Indian pinks. Yellow star thistles and tarweed are common in late summer.

Entry Fees


  • $10 Regular
  • $8 Senior (62 and older) or student or current/retired military.  
  • $59 Annual Day Use Parking Pass (good for one year from purchase and also good at Jack London State Historic Park. If you purchase an annual pass from the automated pay station, please contact the office with a mailing address and transaction number for a permanent pass.)

You may pay for entry at

  • Automated pay station across from the kiosk at upper park entrance. Cash (no change) or credit.
  • Iron ranger at Goodspeed trailhead in the lower section of the park. Cash (no change).
  • Staffed Entry Kiosk (Weekends and most holidays 9:00 am to 4:30 pm). Cash or credit.
  • Visitor Center (9am - 5pm weekends and weekdays when staffed, as well as Friday evenings during the summer). Cash or credit.


Sugarloaf Ridge State Park accepts the following passes:

  • Team Sugarloaf / Sugarloaf Park Pass
  • Jack London State Park Pass
  • State of CA State Parks Pass
  • California State Parks Foundations Passes


  • $50 under 50 passengers
  • $100 over 50 passengers

School Tours and School Groups

School Tours and High School or College organizations are free for day-use with prior coordination. Volunteer docents may be available at no charge and staff biologist and educators are available for additional cost.

Contact the Sugarloaf office at 707-833-5712 or sugarloaf@sonomaecologycenter.org for more information or to coordinate a visit.