Longs Peak

Keyhole Route Information

Learn more about climbing the Longs Peak Keyhole Route, including answers to Frequently Asked Questions.

Check the weather forecast for Long's Peak

Battle Mtn
View from treeline, 9/16/17


Longs Peak Conditions Report

The most dangerous time of year for hiking and climbing on Longs Peak has arrived. Icy conditions paired with afternoon storms remain the primary environmental hazards on the mountain. Recent storms have deposited 3-4 inches of snow on the upper mountain, and the melt/freeze temperature cycle is creating widespread ice formation on most aspects. Rain gear, insulating layers, and warm footwear are highly recommended and would be critical to survival in case of injury on the upper mountain. Additional equipment like Microspikes or crampons and an ice axe may be needed for safe travel. Be sure to check the weather forecast before your trip and plan to be back below tree line by noon. For most visitors this means getting a pre-dawn start.

Keyhole Route Conditions

Fall storms have arrived, creating difficult travel on the Keyhole Route. Expect winter conditions with drifting snow and widespread ice formation. Thin layers of snow on the surface can hide thicker layers of ice underneath, creating enormous potential for slips and falls. Traction devices such as Microspikes or crampons and an ice axe are highly recommended, but are no substitute for proper training and experience in negotiating icy terrain. The Keyhole Route is no longer a summer scramble, and should be treated as a winter mountaineering route.

Remember your safety is in your own hands.

The Boulderfield, 9/16/2017


Keyhole Ridge from the Boulderfield, 9/16/2017.


Chasm cirque 34534
Chasm Cirque, 9/16/2017


Homestretch 8/29
The Homestretch: Watch out for ice where strom water freezes overnight. 8/29/2017




The trail to Chasm Lake is now snow free.

chasm lake
Chasm Cirque


Last updated: September 16, 2017

Contact the Park

Mailing Address:

1000 US Hwy 36
Estes Park, CO 80517


(970) 586-1206
General park questions: (970) 586-1206. Recorded Trail Ridge Road status: (970)586-1222.

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