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

B Map
VIEW FULL MAP

so beautiful at the top. highly highly recommend. get there as early as possible for parking.

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
1 day ago

On a whim I was looking for something relatively short with some elevation gain since I just moved to Denver and hunting season will soon be upon us. Driving there was pretty easy as the road looks like it was just graded this spring or early summer. don't get going too fast or your tail end will try to come around! There's a five mile dirt road approach that looks highly seasonal, but is fine for all but the lowest cars if you're careful and avoid the potholes and go slowly over washboarding.

The hike itself is nice and relatively gentle elevation gain. I'd recommend some trekking poles for the rocky path you have to take, or perhaps just some sturdy ankle support wielding boots. I'd absolutely come back here, it looks like the trail goes further than the last lake but I didn't have a GPS and it began to look like a goat path. For another day then.

hiking
2 days ago

Couldn't have asked for a better hike today. The weather was beautiful, we had to park at the Brainard Lake Lot after getting there at 9am. It wasn't nearly as crowded as I had expected
Everyone we did come across was super nice and very quiet. If someone can tell me of a place that is this easy of a hike and even more beautiful please let me know. I'm not sure there is a place.

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.

backpacking
4 days ago

Lot was full by 10am but we squeezed on the road. We read there wasn’t many backpacking spots - and I found maybe 3, but were too close to water or the trail. We found if you go past (between) the final lakes and keep going (careful, the trails spur and we got turned around), you follow a stream on your right after 1/2 mi to approx 3 sites spread by a few hundred feet. It was a good first backpacking trip for my 7yo. There was plenty of water, moderate temps, and while we saw a bunch of bugs, only really got one or two bites. We encountered a cow moose about 30 feet off the trail about half way up!

I think technically this is in the Indian Peaks Wilderness and you need a permit in summer, but, sorry, it is ridiculous to print a form and mail a $5 check or to go to the office. Let me do it online. https://www.fs.usda.gov/recarea/arp/recarea/?recid=80803

Overall it's not a trail I'd be super excited to get back to or take anyone to, but it was a nice short hike with shade most of the way. The final lakes/ponds are pretty with some views of the surrounding ridges. The lakes are small with quite a few people crowded around fishing or lounging. The first lake you pass is mosquito heaven and pretty yucky.

hiking
4 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.

on Lake Isabelle Trail

hiking
4 days ago

Beautiful BUT: The Lake is now drained. There's only little water left. no more waterfall, and compared to a month ago most of the wildflowers are now gone.
Still a nice walk/hike, would suggest going later in the day as it gets crowded in the morning.

"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.

Great little hike. Got there at 830 ish and had to park further away.

Beautiful stream and gorgeous lake

Did this hike with wife and kids (2 and 5), had hiking child carriers.

I’m honestly hesitant to give this a review because of how good it is. This is a hidden gem (from tourism) and perfect alternative to the emerald lake, dream lake, lily lake, etc. It’s also not only easy, but a great duration. I suggest an evening hike for the sunset at Lake Isabelle, absolutely incredible. Check weather though for any afternoon hikes, always.

hiking
7 days ago

This trail was gorgeous but we went on a Wednesday and it was extremely busy. It was a pretty easy trail for an amazing view.

Best hike in Colorado! Beautiful views and an easy hike without a lot of elevation gain

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.

Beautiful. Well-marked hike.

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.

hiking
11 days ago

BEAUTIFUL! Really easy hike and great for dogs, took mine and he had an easy time going on the trail

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.

Highly recommended views were amazing. The trail is very well maintained. So beautiful!

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!

hiking
12 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!

Lake Isabelle did not disappoint, we saw a moose! Hike is mostly easy- towards the end I might describe as moderate. Take extra water- the altitude bothered me a bit. I also think that from 10am onwards some of the early birds are leaving because several parking spots opened up.

This is such a beautiful hike. Definitely one of my favorites in Colorado so far. I recommend going early as the parking lots fill quickly.

hiking
12 days ago

As an avid hiker, I have to admit that I had my doubts when reading reviews that said “best or one of the best hikes”. However, I have to agree. This hike is amazing and perfect for the whole family. We got there fairly early (6:30ish), but parking at trailhead was already full so we had to park at Brainard Lake, which was also filling up quickly. But the little distance it adds is no big deal. Lots of beautiful wildflowers, gorgeous views, waterfalls, marmots and we saw 2 big bull moose at the first lake you pass. The only negative about this hike is the popularity of it; if I’ll do it again, I would make sure to be there earlier. (On a side note, if you own a National Park Pass, bring it. Mine was safely at home, because I thought it was $11 cash only)

It is beautiful up there today! We got to the full parking lot at 7:30, we stayed and waited for good half hour to park and it was rainy so waiting in the car was no big deal. The sun came out about 8:30 and it was glorious! This hike is easy and fun. You can’t beat the scenery! I would do it again!

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!

Load More