Explore Want to go - 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
1 day ago

Impossible without spikes. The trail is ice the entire way. On the plus side, the views are awesome, and we were the only people on what is a normally very busy trail.

hiking
4 days ago

A great short hike. A little icy in places after snow.

hiking
5 days ago

Beautiful hike! There are still some patches of snow/ice/water, but not a problem with hiking boots. Ran into just a handful of hikers and runners.

hiking
8 days ago

Tough trail for beginners. Definately a good workout. This is also a very popular trail.

This trail is temporarily closed because of the Seaman Fire. It is scheduled to reopen 10/12/18. For more info, Google its special order number: arp-clrd-2018-09.

Beautiful trail with some nice views near the top. The Flatirons are really cool-looking peaks! The trail is really well maintained and manageable to walk on, even during the steeper points. Lots of switchbacks toward the top made the ascent easier than I anticipated. Only one very brief scrambly section.

We stopped at the very top of the second Flatiron (the trail seemed to peter out a few meters behind it) and came down via Bluebaird Trail. Passed lots of other people in the morning, but no congestion.

Went Sunday and it was 45 degrees or so out and sunny. Made it to the top no issues, trail does get a little "confusing" with no trail markers towards the top, though nothing too crazy. Views are great. Saw a few other hikers, other wise good area for those seeking solitude on near by trails.

hiking
14 days ago

Plan to park on the street. Hikers quickly move away from the residential area and into more natural surroundings. Maintained trail scattered with rocks, for a more rustic feel. Morning sunshine shows off the mountains the best! We saw a few people, but mostly had the trail to ourselves. Gorgeous views. Loved listening to the wind course through the Lodgepole Pines!

Short and steep, a good workout, with some good views. Not so crowded, but it was a weekday in early November.

Awesome hike. Not overwhelming hard but tough for moderately in-shape folks. Mostly climbing steps. Gorgeous view at the top.

hiking
16 days ago

Trail was not super tough. I would highly recommend using spikes. I did not and was fine. Just watch where you’re stepping. Though my wife did use spikes and said she felt much more comfortable coming back down. There was an incident with a dislocated hip. Not sure if it was from a fall or whatnot, but it is better to be safe than sorry. As you get further up trail you run between dry land/rocks and icy areas. The end is def worth the hike up. Just be careful!!!

hiking
16 days ago

Awesome hike. Leg burner for sure!

hiking
17 days ago

East trailhead Castle Trail up long switchbacks to Walker Ruins & Summer White Hse (great views west!) return Down Turkey Trot Trail north facing sections icey slush. 8am start, not too crowded mid week.Windy, layer up, gloves & ears. CMCDan,Nov 2 ,2018.

hiking
18 days ago

Beautiful trail. well maintained and not much traffic on the trail today because of the cold may be. But the parking lot is full as there are lot of trails starting at the same place. I have parked on a close by street. It snowed a bit while I was there and it was beautiful

lit trail, scaled the face

sick trail

large crowds, leg burner, beautiful trail and views

hiking
18 days ago

not your average trail. stairway to heaven. seemed longer than 3 miles. arch was stunning, view of boulder and denver as well. very crowded. leg burner. loved it. bring toilet paper, i found free parking away from main lot.

hiking
20 days ago

My favorite trail in Boulder. I do it several times a year in all different seasons. Traction is definitely a good idea in winter. Can be crowded. It is steep. But I still love it. On clear days, one can see out the expansive eastern plains, and the city of Denver in the distance appears very small and isolated.

Hiked 10/29/2018 Castle Trail up to the Presidents Summer House. Beautiful views. Not too busy. Perfect weather and views. Easy to moderate. Great trail while acclimating to the altitude.

Pretty awesome hike close to home.

Pay ParkMobile to park by the hour during certain high seasons (memorial to Labor Day).

Stop to read the day’s updates on the trailhead signs to remain in the know and choose your route. I recommend taking a picture of the map.

Dogs must remain leashed unless they have a very specific boulder tag and have gone through a training program, otherwise you will get a ranger ticket and ruin it for others. Please respect this rule to preserve wildlife and rare ground nesting birds that we are lucky enough to have in our area. Rattlesnakes and bears/cats do occur but you can read about their more prevalent time of year and how to avoid.

Before you come with your dog ensure you have at least 4 plastic grocery bags with you or poop bags. After picking your dogs poop up, squeeze the air out before tying it up. Then place it within another bag to prevent too much odor. Plan on carrying your poop ALL the way to the trash in your hiking pack. When people leave bags leave lining and dotting the sides of the trail, it disrupts natural scents for local wildlife and disrupts their environment. If your dog poops early on as most do, just walk it back to the trash can at the trailhead and get your extra steps in. Keep your extra bags in can you need them later on the hike.

The path up to the 2nd flatiron is beautiful. The initial 1+ mile is mostly groomed path at an incline. When you venture further, you begin to notice many switchbacks as you start to elevate. There are a few areas that definitely involve scramble and use of your hands for balance if you intend to summit. Bring a snack to enjoy up top, and pack all the trash out with you.

In late October, we did not feel that 2 Liters water was enough per person. Next time I will bring 3 liters for each person. Just be on the safe side and enjoy training with a little extra weight. There is a nice frost-resistant water fountain at the trailhead along with primitive bathrooms if the ranger house is closed when you go.

a bit crowded but great scramble & traverse opportunity @ top!

Steep uphill climb for the first half if you're coming form Morrison, but lots of switchbacks makes it easy. Once you're at the top, you'll get an awesome view of Denver and Red Rocks. We also saw tons of wildlife. Lots of options for castle and trail exploring, too. Really good place to take someone new to hiking or visiting the area because you can stay up there for hours or come down if they're not feelin' it. Get ice cream in Morrison after!

hiking
24 days ago

This was a lovely hike, quite the ass kicker at the very end. Good workout and a wonderful view at the end.

Pretty low traffic and amazing views. Didn’t see any wild life but the river was awesome. Along the river there are a few picnic tables.

Well marked, well maintained trails. Some nice views and interesting ruins. A lot of side trails near the top, so you can make it a bit longer. Not too much elevation gain; kind of a mild trail. Not crowded this morning (Tuesday).

nice

Started at trail head around 930. Was pretty packed at the arch but a great hike. Some challenging switchbacks for people like us that live at sea level. Take plenty of water!!! Gorgeous views of the flatirons and surrounding valley. The arch is absolutely stunning. Will do again when I come back to the Denver/Boulder area.

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