Mount Sanitas and Sanitas Valley Loop Trail

MODERATE 1,008 reviews
#1 of 23 trails in

Mount Sanitas and Sanitas Valley Loop Trail is a 3.3 mile heavily trafficked loop 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
3.3 miles
ELEVATION GAIN
1095 feet
ROUTE TYPE
Loop

dogs on leash

kid friendly

birding

hiking

nature trips

trail running

walking

horseback riding

forest

views

wild flowers

wildlife

Directions from Broadway: Traveling north passed the University turn left on to Mapleton Avenue. The trailhead lies approximately seven blocks west of Broadway. While parts of this hike are dog friendly, dogs are not allowed on Lions lair section of the trail.

hiking
1 day ago

It’s a really good hike but there are a lot of people

hiking
2 days ago

This is one of my favorite spots to take the pup. There are several off-leash areas if you and your dog are enrolled in the Voice and Site Control program in Boulder. The Sanitas Valley trail also connects to the Dakota Ridge trail for a bit more of a challenge (there are steps). The Sanitas Valley trail is great anytime of year. The other trails are a bit more rugged/natural so I avoid during ice and snow. Mt Sanitas trail is a bit more difficult and should be avoided if one has injuries or any breathing concerns. Enjoy!

hiking
5 days ago

Sanitas is s nice quick jaunt. It's crazy busy, I like to go early morning.

hiking
6 days ago

This hike is difficult if you begin clockwise, instead of starting on the Sanitas Valley trail. Also almost everyone that I saw had their dog off-leash.

12 days ago

Great trail with an awesome view at the top.

hiking
19 days ago

Started the hike clockwise, the way up more on the hard side. Overall a good workout.

hiking
20 days ago

Started at Settlers Park and took Red Rocks trail to Centennial TH. Did Mt. Sanitas Trail, East Ridge trail, Sanitas Valley Trail, and took Red Rocks back to Settlers park.

20 days ago

Fun day hike

hiking
20 days ago

Was steep going up and back down the peak, so would say moderate to difficult. Was a bit much for my folks who just flew in from sea level, so was slow going, but they had a blast! Shaded and spots to rest. Great views all around.

hiking
21 days ago

I’m not an avid hiker, so I thought this was on the hard end of moderate. Pretty steep trail to get to the top of the mountain; obviously much easier coming down.

hiking
30 days ago

Awesome hike. We took the Dakota Ridge instead of Sanitas trail just cause it offers a bit more of a work out vs a flat road. Awesome way up the mountain, super rocky and more technical than expected at the top but it was great, even with my dog. If your pup has issues with stairs or rocky terrain I might choose another trail. One of my favorite hikes in Boulder, even though it is also so, so crowded.

hiking
1 month ago

If you like to get yelled at, and want to deal with over crowding on trails... this is the trail for you.

trail running
1 month ago

Stunning place! One of my favorite trail runs!

1 month ago

Love this hike great views of Boulder

hiking
1 month ago

Best hike I’ve ever been on!

hiking
1 month ago

This hike is so fun. It is very rocky, much of it is steady incline (if you're out of shape or not use to the elevation, it might be a challenge) and you'll have to scramble a few times but it's doable. I completed the hike with a 7-and 11-year-old in about two hours.

1 month ago

I had to do a quick hike because of a wedding. I'm a 40 something out of shape. I came into the goat trail by dakota ridge. it was steep by my standards and i did not make it to sanitas. but still a very nice hike. a five is a trail you have to do and what i saw of it did not meet that standard. i will give it a 4+

Had a blast with this hike. Took the advice of a previous review and went up Mount Sanitas and down via Sanitas Valley loop. Took me just under an hour to reach summit with lots of breaks for the scenic views. This is a totally do-able hike it was difficult at times and required some hands to stable the climb but that just made it all the more fun.

1 month ago

Loved the trail! Definitely a great work out! Plus it has beautiful views of Boulder and the flatirons (especially in Fall).
If doing the full loop, it seems best to go up mount Sanitas trail and down the valley trail. This allows for a nice and easy ending to the hike.
Only negative is that it's extremely hard to find parking for the trails in the area. Went on a week day and still struggled to find a spot.

2 months ago

Awesome hike!

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