Mallory Cave is a 2.7 mile moderately trafficked out and back trail located near Boulder, Colorado that features beautiful wild flowers and is rated as moderate. The trail is primarily used for hiking, walking, and rock climbing and is best used from October until April. Dogs are also able to use this trail but must be kept on leash.
dogs on leash
A short walk, a final 100 ft climb and a cave. This hike starts at the NCAR parking lot. Head west to the Mesa trail and cross it by the information sign. There are lots of offshoot trails, be sure to follow the signs to the final 100 ft rock climb. If there is no ice or snow proceed up to the cave. NOTE: The cave is seasonally CLOSED from April 1 to October 1 for roosting bats.
Lots of beautiful views and gorgeous rocks. Being from Texas, this was a hard hike but I really loved it. Couldn't quite make the final climb to the cave. Need a little more strength to feel confident. Definitely want to come back and try it again!
Completed about a week ago. Not a bad little hike in close proximity to Boulder proper. Easy, great views, good condition for this time of year. Fun 100 ft scramble to the (closed/gated) cave entrance that pretty much anyone in the family can do (with the exception of doggos). Some slick parts but no need for spikes or serious winter traction, we did them in trail runners. Will come back in the future for trail running and exploring!
Such a beautiful hike, getting to the cave is really hard. I didn't make to the cave. You have to have good arm strength, and climbing skill, which I have none. And you also can't go inside the cave. It's lock with a fancy cage.(wonder how that got there).
I went in March so it was still icy. A little tough to get down on the way back and the cave wasn't accessible but the hike was awesome. Lots of rocks to climb up and great views at random spots along the way. Very interactive!
As of today this trail is not ideal. Very scenic and nice however muddy at a few different places and ice prevents the final steep climb