Marshall - Chileno Valley Loop, from Marshall OLC036, 37.6 miles, 2188 feet of climbing Meet at Olema Campground GO TOTAL TURN ROAD NAME START AT MARSHALL POST OFFICE 0.0 R HIGHWAY 1 1.0 1.0 R MARSHALL PETALUMA RD. 1.4 2.4 X TOP OF THE WALL 1.4 3.8 X SUMMIT 8.1 11.9 S WILSON HILL RD. 0.7 12.6 X SUMMIT 1.9 14.5 L CHILENO VALLEY RD. 7.9 22.4 X SUMMIT 1.6 24.0 L TOMALES PETALUMA RD. 5.3 29.3 R MAIN ST. / HIGHWAY 1 0.2 29.5 X TOMALES FOOD/WATER/RESTSROOMS 29.5 U U-TURN HIGHWAY 1 8.1 37.6 X MARSHALL POST OFFICE R=Right, L=Left, X=Cross, U=Uturn, S=straight