Mount Sanitas Trail

MODERATE 240 reviews
#1 of 17 trails in

Mount Sanitas Trail is a 3.3 mile heavily trafficked loop trail located near Boulder, CO that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible from March until October. Dogs are also able to use this trail but must be kept on leash.

3.3 miles 1095 feet Loop

dogs on leash

kid friendly



nature trips

trail running


horseback riding



wild flowers


Directions from Broadway: Traveling north passed the University turn left on to Mapleton Avenue. The trailhead lies approximately seven blocks west of Broadway.

20 hours ago

I really liked this trail. Easy access, challenging at times and then a low key winding path on the way back to the car lot.

3 days ago

First hike I ever did in CO and absolutely love it. This gets the legs working right from the start, mellows out for a stretch, then some big step up sections. The home stretch isn't too bad. Great hike to catch a sunset depending on the season and sun placement. Highly recommend this hike as a precursor for more challenging hikes in the area (I.e bear peak or royal arch)

4 days ago

First ever trail hike. I'm from the east coast so there were definitely a few times I had to stop for a minute to catch my breath. Amazing views and was the enjoyment I was looking for.

12 days ago

I would say it's moderate to difficult.

Trail is easier to follow and better marked going up the West side, lots of step climbing but not too bad.

13 days ago

13 days ago

It was pretty steep. Definitely rated moderate. Trails not clearly marked on way back

14 days ago

Nice little hike, if in shape and have adjusted to the thin air you will be just fine. Out of town and looking for a starter hike this will be a great starter with some challenges for sure.

16 days ago

Very busy. Views are ok. Good for a quick hike. Definitely on the high moderate side.

18 days ago

Took 1:15 to reach summit with three kids ages 8 through 13 from the steep west side. Another hour to make it back on the east side. Great exercise and great views!

24 days ago

26 days ago

beautiful. not the easiest but not the hardest. First time hiker in colorado and took 3 hours.

28 days ago

Great hike and they have picnic tables everywhere!

1 month ago

1 month ago

Awesome hike! Wasn't expecting it to be as tough as it was, but views were great and I would happily do this one over and over again.

1 month ago

1 month ago

1 month ago

Tough hike that gets blood pumping. We liked taking the loop, with the straight up climb first and the gravel road at the end. Didn't seem quite as tough as Royal Arch, but almost.

Nice views of Boulder from the top. Technical scrambling to get down from the peak. Clocked 3.5 miles from our car round trip and took 1 HR 45 min.

1 month ago

Awesome trail. Great loop with Good views. Take plenty of water and a snack. It's about a 2-3 hour loop if you take it steady.

1 month ago