Explore the most popular River trails near Boulder with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

This was a perfectly challenging day hike for my husband and me. We’re both 50 and live at sea level but are in good shape (him squash & running, me CrossFit), and it left us nicely tired. The rock scramble isn’t bad if you’re comfortable climbing on big angled rocks, and it’s short so you can avoid it and still almost be at the peak. (My husband did it in a pair of flat-soled tennis shoes.) Be aware that the All Trails directions start at the NCAR parking lot, which had plentiful parking on a Saturday in mid-September but added 2 miles to the hike for. 9.6 mile total.

Had a great time for our first trip on this trail!! Took our kids and they loved it too. Pretty easy but amazing views of nature!

We had a large group of women - all ages. The trail was nice - varied, shade, some inclines, great views. We did see a bear pretty close to the trail. Scary.

Ending was a little exposed and views weren’t that great haha

This trail is amazing. Pack snacks and water. This trail will kick your butt on the best way!! There are some harder parts of this trail so be prepared for an adventure and some soreness in your legs the next day.

Amazing hike! Very steep at the end, with a fun little scramble at the summit.

hiking
blowdown
rocky
scramble
12 days ago

Car to car took about 3.5 hours. Loved doing the descent through Bear Canyon, it's way easier and pretty beautiful. Hiking up Bear through Fern is like doing a stair master for 1.5 hours; it's steep. But no complaints, it's a great workout and the view is incredible.

A lovely trail! We did it clockwise and it seemed like most people were doing the same. There is good shade in the forest and the river is beautiful. A new favorite!

doing the full loop was great high peaks and great creek crossings deff a harder trail due to the makeshift steps in areas

great hike. lots of shade for my 2 great pyrenees

hiking
rocky
scramble
15 days ago

hiking
rocky
16 days ago

Magnificent trail! Spectacular views everywhere you look. We went clockwise and did get mislead by one trail sign that was a bit misleading.and ended up at the Ethel Harold parking lot.The all trails app is not fully updated. We’ll be back to do more exploring along the Flagstaff road access. Being extra water and a hat!

hiking
16 days ago

uphill on the way back. only did half. very quiet and quite a few mountain bikers.

hiking
bugs
no shade
18 days ago

running
scramble
19 days ago

went clock wise by accident ended up going out to fast and dying during hard climbs bring water! or hydrate really well before going on this trai!

Amazing hike, steep in areas. Good for beginners

mountain biking
19 days ago

perfect day.great calorie burner with good sights.car show and Boulder hippie festival pretty people

Great trail close to home that I clocked at 5.3 miles. Not too crowded and great views of the flatirons and front range. Some shade along the spring loop section, really easy and enjoyable hike if you’re not looking to drive too far from boulder.

hiking
rocky
19 days ago

Pleasant hike, beautiful scenes. Trail difficulty can be enhanced by where you choos to park, and the direction you head.

GORGEOUS! And strenuous. We started around 9:00am. Plenty of parking left and there are bathrooms at the start of the loop. We went counter clockwise, and I'm still unsure if that was the right move or it would have been equally challenging going the other way. My Apple Watch clocked 8.34 miles and 1,533 feet in elevation. It took us a little more than 4 hours taking several breaks for water and snacks. Every mile was visually different. No major steep climbs or scramble, but my legs definitely felt the subtle inclines and declines. Definitely bring sunscreen. It was also over 90 degrees by the time we finished and we were in the sun for much of the last third of the trail. The best part was the waterfall and the river. So gorgeous and you get to see it twice! The bridges over the water are cute and a good place to take in the scenery. You also have views of the mountains throughout the whole hike, which is great because there isn't a peak, per say. There was a handful of bikers that we had to let pass, but it was not overcrowded by any means. Maybe it was the heat or the length of the trail but as soon as I got back into the car, I fell asleep from exhaustion! Such a good workout.

hiking
20 days ago

Hiked on 8/31/19. Went counter-clockwise and did the full ~8ish mile loop. Started at 7 and was back at the car for 11. This was a great trail! Favorite parts were at Boulder Creek. Glad I got an early start because it was very hot by the end! There are sections with very little to no shade, so definitely bring a hat and lots of water. No issues finding and staying on trail- everything is well marked. The mountain cyclists all had very good trail etiquette. Happy hiking!

Was a great hike wasn't able to make it all the way but the views are great !

August 28, 2019 Went counter clockwise. Don’t. Brought 2 of our labs. This time of year bring more than enough if you like yourself or Love your dog. Going down Fern ruins a great hike. Never saw a fern and to many rocks. I’ll do it again and either loop it up fern or out and back starting counter clockwise. No bugs now. We clocked this as 9 miles from the NCAR lot. Lastly, yes it’s beautiful and areas of coverage but strongly recommend sunblock. Expansive open areas including a large burned out spot. Cheers

A stinky and unattractive walk by the water treatment plant on the way in and out. Definitely start at one of the other trailheads, which also have bathrooms. Highlights were the boardwalk and spotting some cool birds (also the bathroom was clean and smelled good!). Expect lots of mosquitoes - I even got bitten through my pants.

Load More