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A bikepacking route in the Sawatch Range.


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Map Key

66.7

Miles

107.3

KM

0%

Singletrack

12,149' 3,703 m

High

8,592' 2,619 m

Low

7,674' 2,339 m

Up

7,674' 2,339 m

Down

4%

Avg Grade (2°)

27%

Max Grade (15°)

Dogs Leashed

E-Bikes Allowed

Features Commonly Bikepacked · Views

Overview

This is a bikepacking trip that can be done in two tough days or three slightly easier days.

Need to Know

Mirror Lake's level can fluctuate with available water. The road can be inundated necessitating a hike around the lake to re-access the road.

St. Elmo has a general store open during summer months.

Tin Cup Pass is a popular area for 4x4 enthusiasts.

Description

This route follows the Colorado South Park and Pacific railroad from Caulk Cliffs to Hancock. It passes over Williams Pass to again follows the railroad bed near the old townsite of Woodstock. An alternative route would be to follow the Tunnel Lake Trail to the Alpine Tunnel Connector and do a short hike-a-bike over the top to the west portal of the Alpine Tunnel. For a shorter option, start near St. Elmo.

A fast downhill puts you near Pitkin where you turn right to the Quartz Campground. In the spring, this area is filled with Fairy Slipper Orchids.

Continue north to Cumberland Pass followed by a fast downhill to the townsite of Tincup. This is the only place to obtain any kind of food or water on the route. Continue east on Forest Road 267 to Mirror Lake campground.

Out of Mirror Lake, a steep rocky climb awaits to the top of Tincup Pass. Some hike-a-bike awaits on this steep four-mile climb. The reward is the downhill from Tincup Pass back to St Elmo your car. Tincup Pass is popular with OHVs, so stay alert.

History & Background

St. Elmo was founded in 1880 & is one of the best preserved ghost towns in the west, with many historic buildings still standing.

Contacts

Shared By:

Stuart Black

Trail Ratings

  4.5 from 6 votes

#1

in Buena Vista

#1778

Overall
  4.5 from 6 votes
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in Buena Vista

#288

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Photos

Alpine Lake from County Road 162. with permission from adoverboy2
Sep 9, 2016 near Whitepine, CO
Great views, even off the road!
Jul 16, 2018 near St. Elmo, CO
Chalk Lake from the Narrow Gauge Trail
Sep 1, 2019 near Alpine , CO
CDT Alpine Tunnel Loop
Aug 18, 2023 near St. Elmo, CO
Just north of Cumberland Pass looking west.
Nov 10, 2019 near St. Elmo, CO
Nearing Williams Pass, looking back down the valley toward St. Elmo.
Nov 10, 2019 near St. Elmo, CO

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Check-Ins

Aug 13, 2020
Aaron Croft
Completed in in two days. I'd skip Williams Pass for Tunnel Lake. Fairly long hike a bike up Tincup. Plenty of spots to filter water. Tons of motos. 68.7mi
Jul 31, 2020
Niki R
Jul 20, 2019
Douglas Edmundson
Williams and Tincup Passes impassable by anything but mountain bikes due to snow and water. Pretty remote - felt risky doing solo. 66mi — 9h 25m
Aug 25, 2014
Stuart Black
Bikepacked Day 1: 4:53, 31.5 miles. Day 2: 2:43, 18.6 miles. Day 3: 3:40, 18.6 miles 68.7mi — 11h 16m
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