Flatirons Temporary Trail Closures

Here are the trails where closures are expected during the Summer into the Fall:

First and Second Flatirons:

OSMP will be closing the trail from 8 a.m. to 4:30 p.m. Monday through Thursday in the Summer to rebuild stone structures and restore native plant life along the trail. The closure starts at the base of the First Flatiron and will be extended into the Fall. Climbers may climb the First and hike down but may encounter delays.

Flatirons Loop:

Closures will be in place from 8 a.m. to 4:30 p.m. starting in the Summer and into Fall Monday through Thursday. Crews will be installing stone steps, as more social trails have popped up along the main trail, to improve traction and discourage erosion.

Chautauqua Trail:

Spot repairs will be needed in the Fall, which will prompt “multiple 24-hour closures”.

Royal Arch Trail:

Crews will continue to work on the Sentinel Pass, which leads to the Royal Arch formation. Helicopters dropped off material for work to rebuild steps along the pass. The trail will be closed as early as May 25, with full trail closures from 8 a.m. to 4:30 p.m. Monday through Thursday to continue the work from the Summer into the Fall. OSMP may close the trail on some Fridays during the same time window.

Bear Canyon Trail:

These trail closures will be relatively minor and sporadic. Hikers can anticipate 10-minute delays for work and the occasional closures that may span two days. Crews are rerouting a segment of the trail that is close to a stream and important wildlife habitat.

Mallory Cave:

The trail will be closed for two days a week in October as crews repair switchback erosion and close down undesignated trails.


Please consult the OSMP website for the most up to date information.


0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *