1.(mile00,7730ft) START-END ALTERNATE EAST: turnoff onto Co162 , south of Nathrop
2.(mile05,8190ft) START-END: Princeton Hot Springs
3.(mile16,10040ft) take left onto jeep road shortly before Saint Elmo
4.(mile21,11090ft) take right, Williams Pass route follows route signed for Hancock Pass. Route straight continues to Chalk Creek Pass.
5.(mile22,11160ft) turn right from Hancock Pass road onto Alpine Tunnel Trail and Williams Pass route.
6.(mile22,11160ft) take left from Alpine Tunnel trail onto Williams Pass trail.
7.(mile24,11762ft) TOP: Williams Pass
8.(mile25,11380ft) Williams Pass trail joins Alpine Tunnel road. Go left for Pitkin, right for the west portal of Alpine Tunnel.
9.(mile26,11140ft) Hancock and Tomichi Pass routes join from left. Stay right on improving dirt road.
10.(mile33,9660ft) Cumberland Pass road joins from right. Go left for Pitkin.
11.(mile36,9180ft) START-END WEST: Pitkin