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

Hike in Boulder Map
VIEW FULL MAP

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

Great trail, hard climb, worth every step

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.

hiking
3 days ago

Nice, short trail for a quick nature getaway. It is quite steep if you enter from Settler’s Park, much more than expected. There are beautiful views of Boulder at the top. Bring lots of water and sunscreen as there’s not much shade.

hiking
3 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
3 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
5 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
5 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

hiking
5 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

hiking
7 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!

Almost 100% vertical. Take breaks, bring water. Go early on a weekday - my group went on a Sunday late morning, and it was super crowded. Trail is fairly narrow and rocky, which makes navigating the crowds fairly difficult.

hiking
8 days ago

Nice view of city and UOC Boulder from top. Great view of the flatirons. Steep toward the end. Arch is very impressive. Saw lots of raptor hawks. A hazy view of Denver in the distance.

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.

Gorgeous trail; good variety of strong incline, walking through forest, and climbing over some cool rock runs.

very good hike!! it was a tough uphill but only took a little over an hour to the arch. total about 2 hr round trip for us. loved the workout!

hiking
9 days ago

I’d do it again, mainly because it is such a great little workout. Don’t underestimate that uphill! It is totally doable though. There is a $2.50/hr parking fee between 8 and 5, but I recommend hiking before 8am anyway this time of year. 6am would be ideal so that you get the most shade and the best temperature to make the hike as pleasant as possible.

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.

A couple clarifications - this one seems to be a loop as opposed to another one on the list that’s just an out an back (confused me for a little bit as I was researching). Second the trails closed 8-4:30 Monday - Thursday but climbers are allowed to climb up the First and then take the trail down. Looked beautiful but unfortunately misread the climbing exception.

hiking
10 days ago

Did this on a Monday early afternoon after misreading the Flatiron closure warnings. Heavily trafficked - lots of groups, people playing music in their phones aloud, etc - with that said it’s not a national park or anything. Great variety for a shorter trail. Beautiful views, busy at the arch but was able to wait out the crowds to get the pictures I wanted.

hiking
10 days ago

Really hard but worth it

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!

Loved it. Went in early March and there was a little snow but vey manageable. Will definitely di it again.

hiking
11 days ago

Easy hike with the dog (I have a pug and he did fine). A little more scrambling up rocks than expected but not hard at all. Perfect for something quick with the dog! This park fills up fast so go early if you want a spot. I arrived at 10am on a Sunday, the lot was already half full. I might consider going earlier next time. Not a lot of shade, so bring sunscreen and water!

Definitely a solid hike. The trail itself seemed a bit less scenic than the trail to Royal Arch but the view at the end is much more stunning. You get a clear view of the Rockies from the top of the first flatiron and it makes the trek up worth it. For most people trying to enjoy themselves and appreciate the surrounds give it anywhere from 1.5-2.5 hours. But if you've got something to prove I'm sure you could do it faster.

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.

Load More