Mallory Cave

MODERATE 388 reviews
#5 of 62 trails in

Mallory Cave is a 2.4 mile moderately trafficked out and back trail located near Boulder, Colorado that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is best used from March until October. Dogs are also able to use this trail but must be kept on leash.

DISTANCE
2.4 miles
ELEVATION GAIN
803 feet
ROUTE TYPE
Out & Back

dogs on leash

kid friendly

birding

hiking

nature trips

rock climbing

trail running

walking

cave

forest

views

wild flowers

wildlife

rocky

scramble

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.

hiking
1 day ago

Great casual hike. Not too hard and not many steep inclines.

hiking
15 days ago

have done this hike several times. it's a fun quick that isn't too strenuous. beautiful views from many points, but the best is from the cave entrance.

a couple of notes:

1. from Feb through July there is a chain fence halfway up the rock wall. you can't get to the cave entrance during that time. Had I known that, I wouldn't have made the hike.

2. from the NCAR trail drop, down to Mesa trail, during spring it is common to see rattlesnakes on the trail. Be careful, step well over rocks and don't approach any snake!

hiking
22 days ago

The hike was pretty doable in a short time from the NCAR building. Pretty well trafficked and sadly the cave isn’t open. Still great views!

hiking
1 month ago

Great hike! No issues with the trail when I went Saturday but they put up a fence so you cannot reach the summit anymore. You can still climb up the rock to a ledge to see out, but it’s not as great of a view with the trees out there. Lots of spaces to climb though if you’re interested. I’ll come back again when the fence is down and the cave is open.

1 month ago

Best when you don’t have hours to spend but still want good hike.

Lots of kids on this trail. Starts a ncarr, not to challenging, lots of uphill at the end, to see the cave have to climb up some rocks.

hiking
1 month ago

Great short hike! Easy rise to the bottom of the final climb (it’s a climb for sure). Beautiful view from the top! The cave is closed for the season, but still worth the hike/climb. Under 2 hours out and back.

hiking
1 month ago

Moderately trafficked and just barely muddy this Saturday afternoon. Slow and steady start with a good elevation increase at the end. There is a rock wall before the gated off caves so you will need to use hands to climb. Saw some dads struggling to help their children up/down the wall. Saw a few adults of all ages that wouldn’t climb the wall (fraidy cats). The best views are at the top so don’t chicken out. All in all, quick and easy hike. Wouldn’t do it again for exercise, but would bring friends here for sweet views of the flat lands.

1 month ago

I loved this trail but the climb at the end was a CLIMB. For someone who likes to stay on my feet and not use hands I didn’t do the last part. Sorta upset I didn’t get to see the cave but the hike otherwise was awesome!

hiking
2 months ago

Awesome hike! Great views, great workout !

2 months ago

Hiked up about two weeks ago, fun hike. It was pretty icy attempting to climb up to the cave but still doable. Once you get to the top the cave is fenced but you can look inside.

hiking
3 months ago

So much variety in the beauty of the land

hiking
3 months ago

Hiked up here two days ago amazing views saw some whitetail later in the day! The trail was a little muddy and icy which was expected! Great hike!

Really fast and easy trail. Pretty but as with many trails go early before the trail gets crowded.

hiking
4 months ago

Really nice hike with a short climb up to the cave! Lots of trails around that area, so could be a fun place to spend the day and hike around and explore.

hiking
4 months ago

Not the greatest destination. It a hike in the woods is always good!

4 months ago

The joy is in the journey; beautiful forested trail failry steep and rovky. Cave is gated off and last little climb to discover this was a crabwalk scramble with some ice.

hiking
4 months ago

What you would expect from a hike in Boulder. I would go on a sunny day as the view is already not very spectacular when you reach the cave.

It’s a great hike if you want something short, but it’s not very memorable.

hiking
4 months ago

Good hike anti-climactic

hiking
4 months ago

Nice short Hike. Beautiful view of the Foothills!!

5 months ago

This hike and climb at the top are amazing.

hiking
5 months ago

Great trail, pretty cool at the end have to climb up a rock face.

hiking
5 months ago

hiking
6 months ago

Very easy hike but rewarding. Good if you’re short on time

6 months ago

Hiking

hiking
6 months ago

Beautiful and short with a fun scramble at the end! The views of Boulder from the cave are breathtaking.

hiking
6 months ago

Good trail- was hard sometimes to know if you were off of the trail when it become more rocky. The cave is also closed due to the bats. Can't remember when it opens. There is a very steep part where you essentially rock climb to view the cave and the gate in front of it

7 months ago

Loved it

hiking
7 months ago

This was an awesome trail!! However what’s not mentioned is that this is climb to Mallory cave and rocky in areas. Several switch backs. Beautiful, peaceful and a fair amount of foot traffic. Will definitely do again.

7 months ago

Great views along the trail! A must do. The bat cave was still padlocked yesterday, but it looked scary in there anyway! I thought a vampire would appear, lol.

Definitely some scrambling at the end getting to the cave as well as a narrow area you have to squeeze your body through. Great area to sit and see a birds eye view of Boulder!

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