Sanitas Valley

Boulder, Colorado 80302

Distance1.3mi
Elevation Gain610ft
Trailhead Elevation5,507ft
Top6,069ft
Elevation Min/Max5504/6069ft
Elevation Start/End5507/5507ft

Sanitas Valley

Sanitas Valley is a hiking trail in Boulder, Colorado. It is 1.3 miles long and begins at 5,507 feet altitude. Traveling the entire trail is 2.7 miles with a total elevation gain of 610 feet. Near the trailhead there are a rock and woods. This trail connects with the following: Goat, East Ridge, Sanitas Spur and Dakota Ridge.

Sanitas Valley Professional Reviews and Guides

"Views from the summit meadow of this short loop are among the best in Boulder’s backyard, ranging west to the Indian Peaks; south to the back side of Flagstaff Mountain and the Flatirons; and east to Boulder, Denver, and surrounding plains. With about hal"

"Mount Sanitas is known to have the occasional mountain lion visit, along with coyotes, foxes, and plenty of mule deer (aka lion food). That is probably the reason why Boulder’s newest—and arguably most awesome—trail is named “Lion’s Lair.” Completed in the spring of 2015, the route to Lion’s Lair starts to the southwest of the Centennial Trailhead on a trail that parallels Sunshine Canyon Road, heading up the canyon."

"This trail will get your heart pounding, but there are remarkable views of Boulder and the famous Flatirons. This mountain trail is part of the free, well-marked and maintained Boulder Open Space, which includes the Mesa Trail and the trails to Green Mountain, Bear Peak and South Boulder Peak. Sanitas is an unofficial name commemorating the nearby former sanitarium which became Boulder Memorial Hospital. This trail will get your heart pounding.

Catch your breath at the top, then consider making a loop trip out of it by descending the steep switchbacks of the East Ridge Trail to meet the Valley Trail for an easy final mile along a smooth, gravel path. Don’t expect any solitude on this hike but enjoy the interesting views of sandstone formations, especially of the famous Flatirons. You may bring Fido, as Boulder is dog-friendly, and your pooch can be unleashed as long as it is under voice and sight control. Not everyone is happy about that — one Boulderite maintains a website listing how many poops he has located in a day along the Valley Trail (1,427!)"

Sanitas Valley Reviews

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7/22/2018
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4/19/2009
The rock formations were amazing--great for bouldering/climbing. This was mostly shadded in the morning. Intermediate/Difficult hike and the trail, in some places, is unmarked. Great views!
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4/10/2003
The first time I hiked this trail was last fall. I did the loop and it took me almost four hours up the easy side and down the difficult side. I hiked the trail last month in half that time going the reverse route. In the process I strained a tendon in my ankle. A comon injury as a result from hiking up steep hills. Trail running is the way I like to approach hiking trails. For the avid trail runner it would be easier to hike the steep side and run down back side or easy side. That is the approach I will take in the future. The steep side is riddled with many boulders. I have been running for over 30 years and trail running about 15 years.
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10/31/2002
This trail is a easy to moderate hike, getting more difficult as the trail gets into higher elevations. Great views from the top, higher than the Flatirons! A good quick hike
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12/21/2001
It's a nice, gentle hike. Good for a beginner.
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Sanitas Valley Photos

Trail Information

Boulder
Nearby City
Dog-friendly
Accessibility
Moderate
Skill Level
Hiking
Additional Use
USGS Boulder County, Boulder County Open Space
Local Maps

Activity Feed

Oct 2018