Explore Boulder Hikes - view hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

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Be ready for a long hike! It was a good hike, lots of different terrain. Some of the signs (I felt) were mis labeled with the distance to go to get somewhere.
The panoramic view was beautiful.

I really enjoy this trail. It’s easy, breezy and sleazy.

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.

great short family hike

Great trail!

This is a short but challenging hike. Great views along the way and at the top. The hike up will get your heart going. The hike down seemed almost as hard, especially on the knees. There are lots of trails in this area. Pay careful attention to your route to the base of this trailhead as there are several that will bring you here.

This trail is rated difficult for a reason. Tons of large rocks and quick elevation gain. If you have balance issues or are afraid of heights I would say don’t do. The views at the end are fabulous though, great workout! Beware of small area that would almost qualify as rock climbing and not hiking although once you got up wasn’t that bad because of the hand and foot holds they added. Fairly heavily trafficked trail also..

on Mallory Cave

hiking
2 days ago

Very nice!

hiking
2 days ago

An amazing view of what Boulder Colorado has to offer. A must see hike!

Great hike awesome view from the arch. steep in places and rocky. worth the trip.

Great trail, hard climb, worth every step

My girlfriend and I loved it! If you’re looking for water falls there were none this time of year (August) took is 6.9 Miles to do the whole thing

Nice hike, great views at the top!!

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.

hiking
5 days ago

Great trail. Lots of climbing on the way up, but it’s all worth it for the views at the top. Go early to avoid the crowds – it was already pretty busy at 7am and people were lined up inching along the narrow paths on on the way down. Free parking is available about 10 blocks away.

hiking
6 days ago

Great morning hike! Took me 2 hours with a 15 min stop at peak.

Certainly challenging, but nothing to lose sleep over. Expect to wait in line if you’re hoping to get decent pictures at the top.

"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
7 days ago

Nice trail. Took me about three hours. Great views all the way throughout.

hiking
8 days ago

This is definitely a “hard” trail, bust super proud when I finished! Practically all up hill on the way there but that means down hill on the way back! The views at the top are beautiful! I would recommend starting it sooner rather than later so the traffic is low and the sun isn’t too high!

hiking
8 days ago

We enjoyed this hike! It was definitely a high incline and rocky but it was worth it. It was a bit harder then expected the the views are beautiful and the arch is pretty neat. Bring lots of water, take stops and enjoy the outdoors! There are trees on a lot of the hike which gives some much needed shade every now and then.

Thought we would start here on vacation to get used to the elevation before heading to RMNP but this was a tough hike for us. Arch bigger than expected and nice view of flatirons

on Green Mountain Loop

8 days ago

Great hike! Beautiful view at the top.

hiking
8 days ago

This was a very nice short first day hike for our CO vacation to get acclimated to walking at this altitude/weather. I would put the overall difficulty more towards moderate, but it’s a tough call as parts are easy, parts are moderate, and there are some steeper stretches that are more difficult. We went relatively early on a July weekday and the number of people going up was not bad at all, but we passed a ton of people going the other way as we can back down. Yes, bring water, wear good hiking shoes, sunscreen, etc and otherwise use common sense. Although short, the trail has more of the feel of a “hike” than a walk in the park.

Good one

Easy trail with amazing views of the Flatirons.

hiking
10 days ago

Hard but the views at the top and along the way are gorgeous! Saw my first snake on the trail which was a little spooky and there's plenty of signs up warning about mountain lion and bear spotting so keep your guard up!

on Royal Arch Trail

hiking
10 days ago

Beautiful views from the Royal Arch and worth the effort it takes to hike up! Would not recommend this trail for small children, elderly, or dogs that are not experienced hiking companions in high altitudes. Very steep, rocky, and mostly vertical climb. Several areas require scrambling. You’ll want a good pair of hiking/approach shoes. Do not take this trail if you have bad knees, hips, or ankles. Otherwise, enjoy!

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