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trail running

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kid friendly

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no dogs

horseback riding

rock climbing

Decent trail. A lot of rocks so it felt like I was really in the Rocky Mountains! Just kidding, be sure to wear good shoes as you might catch yourself tripping on the rocks, overall easy to moderate hike. Can still hear the cars/traffic from the city.

22 hours ago

Nice hike, great views at the top!!

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

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.

I do this trail every Saturday morning. It's a nice little hike through the woods, just no real payoff..

hiking
2 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
2 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
2 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
4 days ago

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

hiking
4 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
4 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.

hiking
4 days ago

Definitely a challenging trail. I’m in good shape but being from a lower elevation, I felt pretty winded at times. With breaks I still took about 4 hours with a half hour break at the peak. The view was worth it for sure. Highly recommend getting an early start since the trail is in the full sun at the beginning.

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
4 days ago

Enjoyable, no one in the trail today even though it is Saturday, maybe because it was hot! Steeper climb if you go counterclockwise. Good day, will do it again when it cools off.

on Green Mountain Loop

4 days ago

Great hike! Beautiful view at the top.

hiking
4 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.

Incredible trail with great views. Took a little over 7 hours but wasn’t really hurrying to get through the trail. Would definitely do again. Be sure to bring enough water.

Lovely little walk with beautiful views. We were greeted by six wild turkeys grazing along side the path seemingly careless of our presence.

This hike borders on moderate to hard. A fairly mild incline with a few steeper sections. We have run into a large bear on this trail so be alert and be prepared for what to do. We had to turn around the last time when the big guy would not back off and grant us passage.

Good one

hiking
6 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!

hiking
6 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
7 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.

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.

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!

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