MOUNT PRINCETON HOT SPRINGS RESORT
Alpine Tunnel Trail
Length of Hike: 6.3 miles RT
This trail has it all: a historic ghost town, railroad history, primitive high alpine singletrack and a fantastic descent. The trail is a 6.3 mile out and back hike on an old railroad bed that was once the highest railroad tunnel in the world (11,523 ft.) and the first to be built through the Continental Divide. The Denver, South Park, and Pacific Railroad began connecting St. Elmo to Pitkin, CO in November 1879. The railroad was plagued with many accidents during its 30 year life. The last train to come through this tunnel was in November 1910.
Along a trail that has a gentle grade, gorgeous scenery awaits all ability levels. This hike is suitable even for children as it follows the railroad bed. If you’re looking for turn of the century railroads, mining history, and ghost towns, you will not be disappointed!
Directions to Alpine Tunnel:
This trail is 11.5 miles west of Mt. Princeton Hot Springs Resort on CR 162. Turn left on US Forest Service Road 295 to find the trailhead.
10 Hiking Essentials
- Water (1.5 Liters per person per 5-6 hours)
- Snacks (Beef Jerky, nuts, power bar)
- Navigation (map and compass and/or GPS)
- Extra clothing (hat, socks, gloves)
- First aid supplies
- Light (headlamp or flashlight)
- Fire starter and matches/lighter
- CD Rom or mirror, whistle, mosquito repellant
- Emergency shelter (Biffy Bag)
12 popular trailheads in the Nathrop area with hikes for all abilities and age levels. Surrounding areas have additional options for exploring our beautiful valley.