Explore boulder - 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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hiking
46 minutes ago

Such a fun hike! Lots of rocks you climb up, it does get steep. It’s not a paved path at all which we loved. It can get crowded at the top with people trying to get pictures but it’s well worth it. We’d do this hike again in a heartbeat.

Awesome trail!

hiking
7 hours ago

Enjoyable hike! Little rocky and challenging at parts, but nothing too crazy. Dog friendly so expect to see a few 4-legged friends out there. Cool views!

Great and challenging hike. Good elevation gain. Was able to do in about 3 hours. Quite a few trail runners, decent amount of wildlife too. Awesome views! You do have to pay for parking on the weekends, fyi.

hiking
8 hours ago

Very pretty trail. A bit crowded, but not as crowded as I was expecting. I'd call this trail moderate rather than hard, and I'm of average shape. There were parts that were tough, but it's really short so that's why I'd say it's closer to the moderate side. I got to the parking lot by 8 am and it was full. However, there was plenty of parking along the street. It cost 2.50 per hour.

Definitely some nice elevation gain with this one! I started at Gregory Canyon and ended on Flagstaff. First mile or so was all uphill and included some rock scrambling. Saw lots of wildlife including a deer. Rangview was also a lovely little hike. Ending with the Flagstaff trail, this is the part everyone speaks of that runs along the road and requires several road crossings. I didn't necessarily find the traffic bothersome but finding the trail after crossing the road could be somewhat difficult, however the alltrails map is super helpful. Would definitely do this hike again! I enjoyed the scenic views of Boulder and the challenge this hike provided.

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..

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

Get run to build your mountain legs
Watch the poison ivy at the start of the canyon
Got sprayed by a skunk on the approach this morning

hiking
6 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.

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

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!

hiking
10 days ago

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
11 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.

hiking
11 days ago

Oh boy, we saw a black bear cub on the amphitheater trail. Luckily a trail runner came through and scared it off. Other than that the trail has its difficulties in terms of large steps going up to and after the peak. It also started raining on us so i’d prefer to try again on a sunny, bear free day.

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