Mount Sanitas and Sanitas Valley Loop Trail

MODERATE 1,212 reviews
#1 of 62 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 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
3.2 miles
ELEVATION GAIN
1256 feet
ROUTE TYPE
Loop

dogs on leash

kid friendly

birding

hiking

horseback riding

nature trips

trail running

walking

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.

1 day ago

Loved the view on top and the wildflowers on the way up. Not too crowded. Good workout for sure.

2 days ago

Beautiful view of the city and great for trail running if you hike counter-clockwise!

hiking
2 days ago

It was steeper with more boulders than I anticipated. Good day. Good hike. A lot of people on the trail.

backpacking
7 days ago

Hike up to Mount Sanitas first to get your heart rate elevated, then loop down through Sanitas Valley as a cool down. I hiked it while it was overcast and rainy, and I didn’t mind the rain at all, in fact it made the hike more fun. Some of the trail was muddy, but still easy to traverse.

9 days ago

The hike itself is remarkable. A nice incline and a good day challenge. Not the biggest fan of the city overlook at the peak, but the trails leading up make up for it.

11 days ago

Only giving one star because I wanted to let people know that it’s closed today 5/9/18 for parking lot work. I’m sure it’s a lovely trail just a heads up!

hiking
13 days ago

Excellent loop. 3 mike round trip - well maintained hike. Bring your dogs, water, and friends. Be careful of where to park as they hand tickets out like crazy. Hiking shoes or trail runners, you will fine. Steep, rocky, fun.

13 days ago

Great hike! Definitely moderate, great incline for a nice workout. I recommend taking the sanitas route first (go right at the starting junction). Gorgeous views the whole way, will definitely be back. No snow— perfect spring hiking conditions.

hiking
14 days ago

I like the hike, the view was good if you like looking at Boulder. Made me realize I dont want to hike to see a city :(

20 days ago

04-29-18. Had great weather late in the afternoon. Nice views of Boulder. This hike is a great workout ..

hiking
20 days ago

Great day hike. Bit steep going up to Mt. Sanitas, you will definitely get a workout in, but nothing too challenging.

hiking
21 days ago

Beautiful trail. Bit of a steep climb to the top of mount Sanitas, but the trail is really well maintained. Very dog friendly, highly trafficked.

hiking
22 days ago

Lucy my 4 month pup took it like a champ :)

hiking
23 days ago

Hiked on 4/25. Muddy and slippery in areas. We hiked up the peak trail first, which was very strenuous but a great work out. Amazing views of the Rockies when you get close to the top. Then took the East Ridge trail to connect to the valley trail. That route was definitely more than 3.2 miles. Didn’t clock it but i would guess closer to 5-6 miles. But amazing hike and leg workout!

26 days ago

I love how close to Boulder it is! Great views and a good workout

27 days ago

Very steep and a bit slippery on the way down. Very busy but it was Earth Day afterall! Good views!

1 month ago

Wonderful workout! Definitely a steep trek

1 month ago

Yaaaaahhhh! Gorgeous day, friendly people on the trail. Steep at times, short and fun.

1 month ago

Wonderful hike with my girls, ages 11 & 13.

hiking
1 month ago

The wildflowers are beautiful right now. I would consider Mount Sanitas trail difficult though.

hiking
1 month ago

This is rated moderate, but it’s that if you are a seasoned hiker. Steep steps up and down,very rocky. Awesome views! Good trailhead parking.

1 month ago

Love the views of Boulder on the climb up. Rapid elevation climb. Plenty of people on the path but not crowded. Was a bit muddy and still bits of snow at the top April 1.

Awesome hike with a beautiful view at the top! We took Sunshine Trail to Lion’s Liar, then the Mt. Sanitas trail down. Weather was perfect. We were worried about the ice and slush reports, but the trail was perfect. Age ranges in our group were ages 5 to 43 and we did 5.5 miles in just over 3 hours at a steady but easy pace.

1 month ago

I love this hike!

1 month ago

Tough hike due to the quick elevation gain- probably deserves a bit higher than a moderate ranking. Beautiful trail though!

hiking
1 month ago

Great trail. A little muddy when we went. Took the west leg first and it was quite the workout. Lots of stone stepping.

hiking
1 month ago

Great trail. Very busy. If you are bringing a dog you should know that it is sketchy in certain sections.

2 months ago

My husband and I hiked this trail today. We took Sunshine Trail that linked to the Lions Lair Trail. I am SO glad we started this way.
The hike down from Mount Sanitas should be rated as HARD. Knee high boulders all the way down. If you want to stay on a moderate trail, turn around at the top and go back down to Sunshine Trail. I was sure glad I had my trekking poles to assist my knees with all those rocks!

hiking
2 months ago

Go West way up - beautiful and aerobic - great weather in am today

hiking
2 months ago

It is a good hike with views along the entire trail. There are many rock formations along the trail where people stop to boulder. It is pretty steep on the way up, but was more gradual on the back side of the mountain. The peak was fairly crowded, even on a Wednesday. Overall I enjoyed the hike.

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