Howarth Park/spring Lake features 5 miles of hiking trails near Santa Rosa, CA.
From San Francisco, 101 north to Hwy 12 East exit; head east, cross Farmers Lane, continue to end of street (2miles) to Summerfield Rd. Left on Summerfield. Park entrance is 1/4 mile.
http://www.tripleblaze.com/trail.php?c=3&i=477