Button Rock Preserve: Sleepy Lion Trail is a 5.4 mile moderately trafficked loop trail located near Lyons, Colorado that features a lake and is rated as moderate. The trail offers a number of activity options and is best used from March until October. Dogs are also able to use this trail.

DISTANCE
5.4 miles
ELEVATION GAIN
921 feet
ROUTE TYPE
Loop

dog friendly

kid friendly

birding

hiking

nature trips

trail running

walking

forest

lake

partially paved

river

views

wild flowers

Great trail with a few steep sections and generally rocky. Well shaded in the morning. Dramatic views of Long's Peak, Mt. Meeker, and Twin Sisters beyond the reservoir. Word to the wise: Somewhere near the highest elevation of the loop, it is very easy to get onto another trail called the Button Rock Trail. It eventually (5+ miles) gets to another trailhead called Hall Ranch, at least 10 driving miles and a few ridges away from the parking lot at Longmont Dam.

hiking
4 days ago

This is a really great day hike if you live nearby and are off to a late start for the day. We came from neighboring Longmont and started the hike around 3. Got back to the car right after the sun went down. The creek is beautiful and it's really cool to see some local infrastructure at work. I highly recommend this hike.

hiking
17 days ago

Beautiful hike with some stunning views. Very heavily trafficked especially on the road leading to the Sleepy Lion trail, but everybody kind of spreads out after that.

17 days ago

Nice hike!!

hiking
1 month ago

Did this counterclockwise and thoroughly enjoyed it. Fascinating mix of super wide gravel road, steep rocky single track (moments of scrambling even) and a descent on long deteriorating asphalt. Views were great and dam, causeway and canyon walls fun to admire. Dogs off leash on the single track only (about 40%) but that worked for me.

hiking
1 month ago

Nice views but mainly service road hiking. Well marked and plenty of water for pooches. Nice designated off leash trails for the dogs.

1 month ago

This is a go-to trail, the only thing that keeps me from giving it 5 stars is that almost half of the trail is a dirt road, but there are beautiful creek views along the road. There’s a little bit of everything, shade, sun, flat, steep and great views. Bring sunscreen, the road has little shade.

1 month ago

Great views! Not easy to get lost. LOL. Very straightforward. There were some rocky and steep areas, but overall, it was great. My dog loved it! There weren’t too many folks in the early am. I loved the views and that it was close to town. Great! And def moderate.

hiking
2 months ago

Pretty hike only 20 minute drive from Lyons.
Great views of reservoir and Longs Peak at the halfway point.
2.5 hours total.

hiking
2 months ago

It was ok. Got there around 9am plenty of parking.

2 months ago

gorgeous trail. When you finish the sleepy lion, take the hummingbird switchback trail for a beautiful walk around the reservoir.

2 months ago

More of a nature walk than a hike.

hiking
2 months ago

A pleasant family hike with beautiful views at the top of the trail overlooking the reservoir and mountain peaks beyond. Nice rock outcropping sniffer a perfect place to sit and enjoy an appreciated, nourishing repast with an exquisite view. The last half of the loop is a fire road which wasn’t as inviting of nature as the Lion trail on the way up. Lovely, nevertheless!

hiking
2 months ago

Nice open trail through the foothill shrub forests until you get to a higher up area with cool views of the dam/reservoir. Plenty of parking even when its super busy.

hiking
2 months ago

Sleepy Lion great for the small pup!

2 months ago

My wife and daughter and dog had a beautiful hike.

hiking
2 months ago

Great trail with beautiful views!

2 months ago

Great trail! Arrived at 8am on a Saturday and the lot was less than half full. Mostly full by the time we left around 11am. The reservoir was awesome. Great hike with the dog. I’ll be back to trail run!

3 months ago

Great trail! Make sure you do the sleepy lion trail up. When you hit Hull ranch do not go that way go to the right where you will find the summit of the trail and a gorgeous view of the lake. We almost missed it and went the Hull route. There’s not a lot of shade on the last 2 miles back so be prepared for that.

trail running
3 months ago

Great distance and elevation for beginners who want to get some incline!

hiking
3 months ago

This trail is dope. Beautiful views, waterfalls, it’s fun to hike, and there are great places to take photos for your IG

3 months ago

Took my wife to start her getting into shape for more strenuous hikes; moving here to Lyons from NY. About 1/4 mile from damn we encountered a nice size black bear. My wife freaked a little and turned around, couldn’t convince her to keep going. So beautiful a trail, I’m going back.

3 months ago

Such an incredibly beautiful trail! I love that it is dog friendly, because my pooch absolutely loves to hike. We love trails that have water, and this trail has a river that you follow all the way to a reservoir. We also saw a black bear on our hike! Thank goodness it was on the other side of the creek from us. Very neat place.

3 months ago

Sleepy Lion trail is beautiful - stunning views of the dam and Longs Peak, meadows with wildflowers, morning shade in the trees and we had it practically to ourselves on a Wednesday morning. I brought it down to 4 stars because to do the loop you hike back on a dirt road which is nice enough next to the creek but not 5 stars.

3 months ago

Nice trail. We didn’t do the hummingbird switchbacks today because we were looking for a quick hike. Saving it for next time. From the sleepy lion loop you get a nice view of the reservoir from up above. You also get to walk along the river. Not too difficult. Some steep parts but plenty of flat stretches as well. The sky did turn dark behind us and we heard thunder while on the way back while the sky ahead was perfectly blue. There are bathrooms just past the parking lot. Obey the rules—there was a ranger very vigilantly watching.

3 months ago

Lovely hike.

hiking
3 months ago

Great trail! Worth it to find the wildflowers and waterfall.

hiking
4 months ago

Great, dog-friendly front range hike. Got to parking lot around 8am and it was only half full. Took us 3 hours with a few stops for our pup, but could easily be done in 2. The switchbacks to the reservoir are worth the effort - nice spot to have a snack and relax for a bit. This seems to be a pretty quiet trail comparative to other hikes in the area. It does get pretty sunny and warm, so bring plenty of water.

hiking
4 months ago

Absolutely fantastic hike. This one has it all. With option to keep going further into hall ranch trails at the top. Was about to turn around at the top of sleepy lion in the large field before the view of the dam due to inclement weather but so glad I pushed forward. The sky went from dark most of the afternoon to a full 180 of afternoon sunlight. The river and dam portions are astonishing.

hiking
4 months ago

Great summer trail next to river. People were taking dips and cooling down. First part of trail is a road but then the loop is a great true trail with nice views.

trail running
4 months ago

Such a beautiful hike with amazing scenery. Good mixture of rocks and road. Make sure to do the Sleepy Lion Trail. Will be back for sure.

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