Fremont Older Open Space Preserve is a 739-acre regional park located in Santa Clara County, California and operated by the Midpeninsula Regional Open Space District. The preserve contains 14.7 miles of hiking trails, nearly all open to equestrians and bicycles. The area has been owned by the district since 1975.The preserve is named after San Francisco newspaper editor Fremont Older, a previous owner. Older and his wife, Cora, purchased the then-200-acre property for $10,000 in 1912.