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Good hike and close to Boulder. Start early - you can either do out and back (starting clockwise) or loop (starting counterclockwise). First .5 mile of counterclockwise is flat, wide, gravel. The rest of it is a lot of switchbacks and exposed, so wear sunscreen and start early.

I usually don't have to stop and I took a few breaks this time. Great workout and doesn't take too long. Start early!

hiking
1 day ago

Perfect weather for this hike!! I enjoyed so much by the creek, it is always nice to get a nice breeze by the water. This ended up 8.4 mile hike, enjoyed it so much! 80% is shade, so great for hot summer hike as well. Totally different scenery from hikes around Baseline. Recommended! However this is not "Hard". Should be listed as "Moderate".

Excellent trail! we did the first leg to the peak about 3 miles. mostly open until you start the climb. Climb was challenging over rocks, right turns. Peak had amazing views. Took Lion's Lair trail back down and this leg was mostly paved but a long 5 miles or so. Overall a really nice park in Boulder with several interesting trails.

Fabulous hike. Sturdy views, etc. highly recommended.

As others have mentioned it is about 8-9 mile loop, great scenery, going counter clockwise would of been easier, didn't know my clockwise to counter and went the hard way, the wildlife is great saw many deers, snake, chipmunk, and rabbits. Fun but challenging hike, especially the last mile, which felt like 3. :)

Quintessential Boulder hike. Went clockwise today - I prefer to tackle the big “steps” on the ascent and come down through the valley. Always nice to have bathrooms (across the street from the trailhead.) Friendly faces and interesting terrain. A perennial favorite.

Well maintained trails that are surprisingly pretty busy. Definitely take some water with you and wear the right shoes, rocks can get a bit rough at some parts. Plenty of hills and the views are gorgeous but if you’re not used to the elevation, I’d recommend taking it slow at first. Only down side is it’s a state park so you have to pay to enter.

Took this trail all the way down to lost lake, then back up, taking a right on Waldrop to take us back to the Brainard entrance parking.

Very pretty bike, I would suggest making sure you get as far as the meadow that opens up onto a beautiful view of Mt Navajo peak and the continental divide.

Lost lake was beautiful, but I avoided taking the back paths to avoid the crowds on this busy Sunday.

"Stairmaster Sanitas" is a great place to get a very real workout in. We are in decent shape and climbed up Sanitas and went back around the valley loop trail within 2.5 hours. I would categorize this as "moderate to hard" given a few of the rocks you have to scramble over and how steep it is. While you can carry a child on a backpack up an down, it's not the greatest one to choose for that since you might have to shuffle a bit over rocks, etc.

hiking
12 days ago

Well maintained trail, nice views.

I started up the Sanitas Valley Loop first. Beautiful views of urban Boulder and a smattering of homes in the hills. The moderate valley trail gives way to some steep inclines as it connects with the East Ridge trail. I was visiting from Atlanta so I had to catch my breath and steady my footing as the trail ascended. Had to get used to the change in altitude. Plan to take your time navigating the rocky, sometimes not well marked East Ridge trail if your new to it and out there alone. I got out early in the am and had a few hikers help me find the trail but I can see that this trail gets very well populated after mid morning. At the top of Ridge Trail I met some nice folks who directed me to Lion’s Lair trail just beyond the summit for a good trail run. This trail was pretty smooth and the decline makes for a steady tempo run. Don’t get too comfortable because the switchbacks will keep you on your game. Overall a fun trail to test your trail speed. The locals pointed directed me on how to go from the Lion’s Lair trail to a narrow barely there trail that runs parallel to Sunshine Canyon Dr. This trail led to me the Centennial Trailhead parking lot. Overall awesome experience for a trail runner who wants to mix it up with a hike and run.

this incline is no joke! my poor pups paws were shredded after hiking these rocks. I ended up having to carry her 2 miles to the end. It was scenic but not as great as everyone makes it out to be.

hell yes

Very challenging, beautiful hike! Once you’re at the top there’s an option to hike down towards Sanitas Valley Trail via East Ridge Trail. There was a point along East Ridge Trail that we felt did not have ample signage as we ended up going down the mountain off the trail. Other than that this trail was awesome!

Great hike! A bit strenuous at the beginning but well worth it. Make sure to take the Walker Ranch Loop down to the falls. Awesome views!

Steepness was a bit more than expected. Id suggest going up the east ridge as it seems like it would be a bit treacherous to go down. Note that there are large steps that may make it hard for people who have any soreness in their knees. Great views at top!

A lot harder than expected. I would rate this as moderate to hard. I hiked this on a sunny day, which probably made it a bit more difficult. Regardless, I would do this again but counterclockwise next time.

hiking
17 days ago

One of my go-to trails in the Boulder area with great views of Boulder creek! I definitely second the other reviewers - we were tracking our miles and ended up walking around 8.2 miles total so be aware of the added distance. I've done both the clockwise and counterclockwise route and would definitely say counterclockwise is the way to go if you're looking for an easier go with less steep terrain. Be aware that there will still be some steep parts, even on the counterclockwise route.

Harder than expected but beautiful throughout the entire hike. Wore tevas and wished I had my hiking boots

This trail was more challenging than I expected. Very glad it was an overcast day. The cloud cover kept us cool. I highly suggest taking the trail clockwise. The apoach to the summit is longer a somewhat easier that way. The decent, continuing the clockwise loop, was difficult in my opinion, and I got the impression that other hikers turn around rather than taking the steep route to the valley. I'm glad we did, however, because the valley is gorgeous and covered in wildflowers.

Great trail! Just be sure to get there early. Very crowded after 10 AM.

Very well maintained with wide paths and not too much traffic. Also excellent wooden bridges to cross the creek.

23 days ago

Good and strenuous hike. The 3/4 mile steep section was fun and tough up and down (recommend hiking poles). Enjoyed the shade during that section. Exactly two hours from tail head to peak (with several photo stops) and about 1:45 down. Nice 360 views from the peak.

We really enjoyed this hike. I'd do it again. We sort of did it in reverse (instead of starting on Mount Sanitas trail we started on the other trail. I forget the name but it's the one on the right. It'll make sense when you get there). Anyway, this seemed much more gradual at first. But once we started the summit it was still a good workout. I don't know if it qualifies as "scrambling" but It gets pretty rocky at some points and it's fun to climb on all fours. I'm an animal though so YMMV. Anyone in reasonable shape could do this hike but don't kid yourself. I saw those dudes who don't wear t-shirts so they can show off their 6 pack huffing and puffing on the ascent. It's really doable though!

Great views, half shade and half open. Good hike close to Denver. Definitely a moderate difficulty. We hiked with 9, 12 and 15 year old and they did alright.

hiking
23 days ago

Hiked this solo mid week and only saw 3 other hikers. Pretty wild flowers and it was well marked. A few spots got my heart rate up and I felt satisfied at the end!

After applying a liberal amount of sunscreen I raced toward the trailhead with high hopes and wasn't disappointed. Ascending this natural wonder was a no joke although there was guy carrying his 4 month old baby while navigating this hike. After reaching the peak and celebrating with my gf it was time to crawl down this beautiful beast. Upon decent, I thought many times how the hell do people run down this thing and I can barely walk it, but nevertheless we made it down and finished off with an easy half mile or so walk back down to the car. Great views and kinda crowded

This is our go to hike. Easy to get to, challenging but you can be done in an hour and a half. Great views of boulder at the top!

Great views from this trail. Definitely more difficult for a “moderate” trail, especially near the top. There were rocky areas that were kind of tricky to navigate.

Great trail! We went the easier way up and took the more challenging, rocky way down! Definitely more of an adventure for us Wisconsin folks, but worth every second! Beautiful views! :)

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