Natural Bridges to Davenport via Bonny Doon Rd/Smith Grade Mileage: 40.03 Miles Climb: 4923.8 Feet 0.0 Start at Swanton Blvd (Natural Bridges) 0.11 R into and through Natural Bridges State Park 0.66 X Delaware Ave to Natural Bridges Dr 1.01 L Mission St 1.27 X Shaffer Rd to bike path 2.18 Exit bike path and turn left on HWY 1 8.67 R Bonny Doon Rd 12.32 Continue on Pine Flat Rd 12.46 Bear left to Pine Flat Rd 16.04 R Empire Grade Rd 21.20 R Smith Grade 26.32 L Bonny Doon Rd 29.59 R Hwy 1 30.63 COFFEE/LUNCH IN DAVENPORT 30.65 L HWY 1 38.19 R then quick left on bike path 39.08 X Shaffer Rd to Mission St 39.34 R Natural Bridges Dr 39.66 L Delaware Ave 39.78 R Swanton Blvd 40.03 End at Natural Bridges State Beach R=Right, L=Left, X=Cross, U=Uturn, S=Straight NBP-003