Explore the most popular kid friendly trails in Boulder Open Space with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Easy trail. Such a beautiful park. Sunny and cool today.

5 days ago

Great hike! No issues with the trail when I went Saturday but they put up a fence so you cannot reach the summit anymore. You can still climb up the rock to a ledge to see out, but it’s not as great of a view with the trees out there. Lots of spaces to climb though if you’re interested. I’ll come back again when the fence is down and the cave is open.

Wonderful workout! Definitely a steep trek

6 days ago

Gorgeous red rocks. Easy to get lost, but that’s part of the fun! Best if you enjoy climbing rocks - climbing to the peak of them was a highlight for me. Can be scary climbing back down from rocks. The grass is so green at some parts that it looks prettier than some golf courses!

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

Wonderful hike with my girls, ages 11 & 13.

8 days ago

Best when you don’t have hours to spend but still want good hike.

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

Very beautiful for being so close to town!

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.

13 days ago

Lots of kids on this trail. Starts a ncarr, not to challenging, lots of uphill at the end, to see the cave have to climb up some rocks.

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.

20 days ago

Great short hike! Easy rise to the bottom of the final climb (it’s a climb for sure). Beautiful view from the top! The cave is closed for the season, but still worth the hike/climb. Under 2 hours out and back.

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.

21 days ago

Moderately trafficked and just barely muddy this Saturday afternoon. Slow and steady start with a good elevation increase at the end. There is a rock wall before the gated off caves so you will need to use hands to climb. Saw some dads struggling to help their children up/down the wall. Saw a few adults of all ages that wouldn’t climb the wall (fraidy cats). The best views are at the top so don’t chicken out. All in all, quick and easy hike. Wouldn’t do it again for exercise, but would bring friends here for sweet views of the flat lands.

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

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

Great hike to get the season going!

28 days ago

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

I loved this trail but the climb at the end was a CLIMB. For someone who likes to stay on my feet and not use hands I didn’t do the last part. Sorta upset I didn’t get to see the cave but the hike otherwise was awesome!

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!

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

1 month ago

This Red Rocks to Anemone trail is closed off at the Centennial Trailhead, accessed from Mapleton Ave as it's turning into Sunshine Canyon. Postings said it was supposed to open in February. (I'm told you can get on the RR trail from Settler's Park.) Probably 12 parking spots in this lot. Instead we took the Sunshine Canyon trail (easy, narrow trail) and then crossed the canyon to get on Lion's Lair.

Beautiful views, lots of fun. Brought our dog and he loved it.

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.

1 month ago

Awesome hike! Great views, great workout !

Stay on the trails for an easy walk with awesome views, or climb around on the rocks for something different. The whole family went on this hike and everyone enjoyed it.

Not so much moderate. More hard. Approaching the loop and heading to the right you have a slight grade for a mile which is deceiving. Boulders ahead! Pretty challenging for me and my Cattle Dog.

Very popular, mostly college kids and we were the oldest at 64 yrs. However I would not say it was moderate at all, but hard! High stepping up log”stair master “ and mostly knee high boulder climbing. Pretty views and really nice at the summit. Two hrs up and one to get down for us. Big wind gusts and temp drop coming down, but sunny. Ran into two rangers who said this should be labeled hard. Many dogs, so that’s always a plus! My dog loved it and worn out today! So if you are older with compromised knees, it will kick your butt. But we were proud to finish! Didn’t go down the other side as heard it’s still icy/ loose gravel in that side.

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