28 Nov 2015 Hikes > 5 miles, alameda county, east bay, moderate-to-difficult, wildlife Sunol Regional Wilderness 1895 Geary Rd, Sunol, CA 94586 8 miles // 5-6 hours // mostly exposed Moderate-to-difficult trails. We got off our trail plan and kept going! Share with: Nearly 8 miles today. I'm feeling it already! Worth it. Ass breaking trails for realz. So much beauty. We climbed to the very top of the bottom left summit... And continued for miles.