Mount Sanitas and Sanitas Valley Loop Trail

HARD 1794 reviews
#2 of 105 trails in

Mount Sanitas and Sanitas Valley Loop Trail is a 3.2 mile heavily trafficked loop trail located near Boulder, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking and trail running and is best used from April until October. Dogs are also able to use this trail but must be kept on leash.

Distance: 3.2 miles Elevation Gain: 1,256 feet Route Type: Loop

dogs on leash

hiking

running

forest

views

wild flowers

wildlife

rocky

snow

no shade

While parts of this hike are dog friendly, dogs are not allowed on the Lions Lair section of the trail. A wonderful "desert like" hike with great rock formations, vistas of Boulder CO, and rock scrambling if desired. The terrain varies from open meadows and wild flowers, to rugged boulders and projected rock outcrops. If parking lot is full, roadside is allowed.

hiking
12 hours ago

Gorgeous sunrise hike/trail run. Not crowded.

Great hike! I went clockwise. The first half is definitely a challenge, especially if you’re not used to the elevation here. Well worth it for the views though!! The last stretch is pretty open with no shade.

Close to home. Exposed. Recommend hiking clockwise. Very enjoyable hike.

Easy hike. Definitely not hard, as it states in the description. Nice views near the top

hiking
no shade
rocky
scramble
5 days ago

Really good workout for a relatively short hike. Not a lot of shade, and pretty crowded which is to be expected for a Sunday morning. Good views of boulder and the front range from the top. Calf burning on the way up and knee busting in the way down! Got lucky with parking but it’s usually pretty full on the weekend morning.

With Juliana this time, went clockwise on loop

Went counter clockwise up and it’s a steep climb to the top. I felt the burn!! And was exhausted, but it was a good work out. Going down on the Dakota Ridge Trail offered more tree coverage than the Valley. Would definitely do again and do the loop in the same direction.

Good after work hike yup and run down.

hiking
no shade
rocky
scramble
10 days ago

Good trail! We went counter clockwise based on a review and am so glad we did. Tough on my knee, used a walking stick and was glad to have it. 108 floors according to Fitbit.

hiking
12 days ago

More sun than shade being sun tan lotion!

hiking
13 days ago

steep incline but still not to bad going up. great views. moderately crowded at 3 pm on Saturday

hiking
13 days ago

great trail. was looking at routes and was happy we took seven hills to lions lair down sonitas. avoided some of the crowds and saved the hips a bit. we hiked this at 11am

Great as usual. Trail construction going on so stay on the designated.

hiking
off trail
rocky
14 days ago

hiking
18 days ago

Hiked in late August, quite a treat for such a short route. Great views of course, and the ascent can be an hour at a good pace. Hot as hell...bring lots of water!!

hiking
rocky
scramble
washed out
18 days ago

Took the loop counter clockwise beginning w/ sanitas valley trail; def recommend going opposite direction of sanitas trail, which is pretty steep (big steps) and easier to go up then down on. Pretty crowded. Sometimes, trail a bit narrow. Lots of scrambling up to summit from sanitas valley. Lots of dogs. Not a ton of shade but not too bad on a hot morning. Next time, take Dakota ridge loop/explore the eagle trail. Definitely a good one for hiking poles

hiking
rocky
18 days ago

Great hike, was definitely hard. We went to the left to take the shorter ascent and it was rocky with a LOT of steps. Views were awesome and the decent was pretty steep and rocky but then you end with a pleasant walk back on a gentle downhill slope.

Great but I turned around at the construction near top.

hiking
rocky
19 days ago

Short but sweet little hike! Perfect for friends visiting from out of state. Some short uphills but totally manageable for the distance.

no shade
off trail
rocky
scramble
20 days ago

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