Mallory Cave

MODERATE 113 reviews
#4 of 19 trails in

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.

2.7 miles 846 feet Out & Back

dogs on leash

kid friendly

hiking

rock climbing

walking

cave

views

wild flowers

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.

17 hours ago

Great hike!

1 day ago

2 days ago

5 days ago

We went with two kids ages 6 and 8 and a small puppy and it was a great trail for everyone. The last climb up to the cave was too much for the puppy and the 6 year old but the 8 year old did great!

7 days ago

3 months ago

Really great hike! Have to scamper up some rocks but I loved that!

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4 months ago

pretty not we'll marked.

hiking
4 months ago

Beautiful!

hiking
4 months ago

Beautiful

hiking
5 months ago

Great hike for the morning, but heavy traffic coming up on our way down. single track, had to stop quite a bit so people could pass. Cave is fenced off but still loved the hike.

5 months ago

Nice hike, Boulder green tag friendly for the hound. Up and back in under two hours from the parking lot and I'm pretty slow. Will likely do it again when the open up the the last 100 ft in October. They close it during the summer months for the bats.

5 months ago

Not much to see when you get to the top.