Explore the most popular birding trails in Rocky Mountain National Park Wilderness with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

A favorite semi challenging trail.

Nice views on a hike pretty much anyone could do. Decent climb when you come off the fire road for a bit, eventually turns into a wide smooth path for the descent. Probably about half the hike is on wide, smooth dirt path, some of that is fire road. Good scenery and low traffic. Good amount of the trail is off leash for dogs. Tons of water features which adds a lot to the fire road parts.

Was really good minus people having their dogs off leash in non designated areas

I did this trail on 4/22/18 with no spikes and a walking stick. Parts of this trail got really sketchy without spikes. I got through it but would definitely not recommend going with just hiking boots, it got real dangerous but the view at the top is really amazing. Took me 4hrs to go there and back

8 days ago

Hiked on 4/17/2018. Left Long's Peak Ranger station at 9:15am and reached Chasm Lake at 12:00pm. Did the whole trail with micro-spikes only. Trail is well traveled and well packed. Micro spikes a must. Weather was perfect on the way up, clear and a little windy. On the way back around 1:30pm it got really windy and started snowing. I made a hustle to get back to the treeline as fast as possible. Made it back to the Ranger station at 2:15pm.

Love it. Amazing views!

Good view of the distant snow-strewn peaks and a reservoir. Wildflowers are starting to emerge now. Not a lot of scenery to look at unless you're at the very highest point of the trail, but besides that it was an easy trail with decent enough reward at the top. Very few people hiking on a Monday afternoon. Only passed two groups of people.

Once you get to the point on this trail where it turns into a road that heads back to the parking lot (clearly marked with a sign) and there's a building where the reservoir water flows out into a river, I'd also suggest heading up the 'Hummingbird Switchback Trail' that goes up to the Ralph Price Reservoir. It's short and you get a good view of the water, and can even follow a trail all the way around the lake if you want. From there you can take the road that goes around the reservoir a bit and also leads back to the parking lot.

10 days ago

Hiked on 4/16, the trail is well packed with snow, and not super icy. I would still recommend spikes and poles, but snowshoes are not needed. Above tree line, this trail can be brutally windy. Me and some other hikers in front of me were turned back by gale force winds that would knock you over and make it difficult to move forward. I would recommend checking the wind conditions for the trail, but even making it as far as I did the views of Longs Peak were seriously awesome.

10 days ago

Beautiful winter hike, gorgeous views of Longs Peak. Didn't need the snowshoes yesterday but was glad to have the microspikes. There are a couple areas of exposure just before the big snowfield traverse, probably better early with ice and microspikes than later with softer snow.

11 days ago

Hiked yesterday. Packed snow and ice along the trail, but was able to do it in just hiking boots. Trail is pretty poorly marked so you definitely have to pay attention. Some scrambling toward the end of the trail. Views at the top are GORGEOUS!

12 days ago

Hiked on April 14th. Great hike! Definitely need micro-spikes. Really, really beautiful. The drop from the trail to Chasm Lake is actually pretty steep, which in the snow we decided to do anyways and just took some small boulder climbing. AMAZING views. The final few turns in the trail after the privy had some icy spots with steep drop offs but with the micro-spikes it wasn’t bad at all, just take it slow if it’s icy. It’s just so freaking beautiful. Start early in the morning. It gets icier and windier in the afternoon.

Nice hike. Did this last September. Definitely on the easier side of Moderate. Nice and shady for most of the hike. The dam is awesome and a great place for lunch. Some nice views along the way as well.

Beautiful rugged hike. You start out the first half mile or so on a service road but it’s going along side the St Vrain creek, so the scenery is still beautiful. Also I’d say the last 1.5 miles of the loop are coming back down the service road, but again, still feels plenty secluded. We went on a Wednesday and hardly ran into anyone else and parking was not an issue. Once you take the trail (it’s on the left off the service road) it is pretty steadily inclining for a while. Gorgeous views of Longs Peak at the pinnacle. Would definitely do again!

16 days ago

Hiked on 4/9. There was 2-3ft of fresh snow above tree line which made it very difficult to find the trail. Snow shoes are a must with all of the snow.

Loved the scenery on Sleepy Lion Trail! Make sure to turn left onto the trail off the main road. I accidentally made a left turn into Hall Ranch and turned my 5 mile hike into over 10 miles, but a lovely mistake! I saw over 20 deer close-up and a huge mountain peak before returning to Sleepy Lion Trail. Also saw eagles, wildflowers, and a rabbit. Finally hit the dam and took Hummingbird Switchback Trail up to Ralph Price Reservoir. Absolutely beautiful around 430pm! Took the road back to the car and enjoyed walking by the river.

Quick morning hike with lots to look at. Trail was essentially dry on 4/7/18 which is always a plus.

Got to the lake right at daybreak and sat there listening to the ice melt under the surface. Was an awesome experience!

It's certainly pretty, but this has to be one of the worst marked Trails I've ever seen. I got lost multiple times. I don't even know if I ever made it to the job. Very frustrating.

Fun hike with my son! Need spikes when coming down towards the top because it is slushy and snow packed in areas.

Great time with my new pup Misha, she did really well for her first time in the mountains!

Trailhead parking is on the road. The trail gets hard to find a out .8 miles in. Nice overall hike, a few spots on the way up would have been nice to have micro spikes. By 10am the snow was starting to melt and it created some challenges coming down without solid footing.

29 days ago

really nice view

1 month ago

(3/26) Good hike. Excellent views from the summit. The trail gets a bit lost near the top, but if you look for the carins you can find your way. Traction not necessary but could be helpful as some spots are slick. We made it up without too much trouble in hiking shoes/tennis shoes. Very do-able for the whole family (ages 10 and up). My Garmin clocked this at a bit over 4 miles out and back from trail head.

1 month ago

Hiked today 3/25. Started early in the morning and was the first one to the lake. Only need microspikes, snowshoes are a bit much, at least until the next snowfall. I started at 6:00am and it was a bit windy. Made it past the snowfield with no problem thanks to the previous tracks......but coming back was a different story. I stayed at the lake for about 2 hours and that was enough time for the sun to soften the track on the snowfield. As I was coming back across I slid about a quarter of the way down and had to dig into the side of the snowfield to make my way back up. Be careful once the snow begins to melt it can be a bit treacherous. I would go as early as possible if the weather is warm, to make sure the snow stays solid.

3-25-18 Little Gem outside the park. Suggest an early start as there isn’t much parking along the road, trailhead just before Lilly Lake TH.
Nice rolling climb, scramble last 200 ft or so. Bring traction, parts in shade still covered with snow, makes it a more enjoyable trek.

Beautiful versatile trail. Took the left off to sleepy lion at the start, great elevation gain to look over the reservoir.
Came down to the reservoir and sat near the water for lunch.
One of my favorite hikes, was crowded but not terribly so.

1 month ago

Hiked on 3/24/18. Started at 7am with mostly snowpacked trails along the way. Met up with a couple other guys at the Chasm/Boulderfield split, and hiked all the way to the lake. We hugged the upper incline and it was fresh 4 in of powder with a thick layer of ice underneath, highly recommend at least microspikes. The wind was mild and final destination was totally worth it!

1 month ago

Hiked 03/24/18- microspikes very helpful. Multiple social trails after treeline break so keep your eye out for the cairns but you have an epic marker: the diamond and keyhole of Longs Peak. Above treeline, very mild “posthole-ing” (less than 8 inches) but past the fork to Chasm or Boulderfield is a different story. Too off camber for snowshoes in my opinion and spikes worked but you had to be diligent. Considerable “posthole-ing” at times just before the 2nd privy and headed up to the lake (depending which route you took: Rocky scramble/icy or posthole land). We lucked out with little to moderate winds and lots of sunshine! ENJOY!

1 month ago

NEED microspikes to scramble too top but worth it for 360 mountain views. Also, Garmin pedometer clocked at 5.5 miles.

This was a lovely hike on a sunny, brisk day. I normally don't enjoy hiking up roads, but there was a lot to see in the first 3/4 mile - climbers, dam, creek...The turnoff on the single track trail was lovely and different rock out croppings provided awesome views of the reservoir. Easy afternoon hike. For more details and photos. https://etbtravelphotography.com/2018/03/19/road-trip-to-the-rockies-button-rock-preserve/

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