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Chasm Lake is a 9.4 mile heavily trafficked out and back trail located near Estes Park, Colorado that features a waterfall and is rated as difficult. The trail offers a number of activity options and is best used from June until October. Horses are also able to use this trail.

Distance: 9.4 miles Elevation Gain: 2,601 feet Route Type: Out & Back

hiking

horseback riding

rock climbing

snowshoeing

bird watching

running

forest

lake

paved

river

views

waterfall

wild flowers

wildlife

rocky

scramble

snow

off trail

no dogs

Reservations to enter the park will go on sale through Recreation.gov at 8 a.m. Mountain Time on Thursday, May 28. Reservations will be available to enter the park from June 4 through July 31. The next release will be on July 1, for the month of August and any remaining days that have not been booked for July. On August 1, reservations will be available for the month of September and any remaining days that have not been booked for August. On September 1, reservations will be available for the month of October and any remaining days in September that have not been booked. Permits issued using the reservation system will allow park visitors to enter the park within two-hour windows of availability between 6 a.m. through 5 p.m. This process will facilitate advance payment of entrance fees, minimize contact between park entrance station staff and visitors and limit congestion in parking lots. The permit system will apply to all areas of the park. In the initial opening phase, the park will open approximately 60 percent of the park’s maximum parking capacity or 4,800 vehicles (13,500 visitors) per day. Trail is fantastic. First part follows the Longs Peak Trail through the woods. Climb is consistent and gentle, very easy. It steepens a bit once you get past the tree line, especially in the stretch immediately before the outhouse at the trail junction. After the junction you go downhill for a bit, and then have to scramble up a ~150 rockfall to reach the lake. Take your time and follow the cairns.

hiking
great!
scramble
snow
2 days ago

This hike is a MUST at Rocky Mtn. NP. It's a pretty tough hike, but well worth it. Definately our group's favorite hike we went on at the park this week. Still a little snow to cross, but it just makes it a more exciting journey.

hiking
4 days ago

Beautiful hike with a great view of Longs Peak. The trail is actually only about 8.6 miles (but still difficult). Parking fills up fast so if you don't want to necessarily park on the road an earlier start time would probably be better. Still some snow on the trail but was not too bad and manageable to cross without yak traks (or other similar products). This hike never disappoints. You also DO NOT have to make a reservation to do this hike.

hiking
fee
6 days ago

Have this one scheduled for this week. Does any one know if you need to make a reservation for a day pass? Or is it not required? TIA

hiking
7 days ago

Attempted today, June 28, 2020, but turned around about a mile from the lake due to wind. Trail was pretty easy up until this point!

hiking
rocky
scramble
snow
8 days ago

Awesome hike. Perfect weather today. Couple of snow fields, would recommend poles and spikes. A lot of people did it without, but I would still recommend. Lake was beautiful and the trail wasn’t too busy.

hiking
muddy
rocky
scramble
snow
8 days ago

One of the best hikes in RMNP IMHO. Hiked Chasm Lake early in the morning on Saturday, June 27th. Pulled up to the Long’s Peak trailhead at around 5:15A and the main lot was full so I had to park on the side of the road...all good, plenty of parking there. No doubt that this is a strenuous hike, especially on the ascent. Did Sky Pond last weekend and Chasm is definitely more of a challenge in terms of strenuousness and technical sections. It is basically uphill the entire way up, but that makes the way down rather pleasant. Fair amount of scrambling and boulder fields to deal with, and some patches of snow which could be sketchy due to drop offs on the sides. Definitely recommend trekking poles and crampons in your pack until that snow is gone.

hiking
great!
rocky
scramble
snow
8 days ago

Did this on saturday. Took quite a bit of time as I am a newbie and this was the first time at this elevation. The snow field is no joke...had to use spikes and poles but then totally doable at a very slow pace...you really have to be sure your footing is solid before moving forward...especially coming back when it's more slush...but if this newbie can do it then anyone can!! It was so beautiful all the way up and then the lake is just stunning!! A must do hike!!! They did check for a reservation ticket at Longs trail head so be sure to have one if its after 6am.

hiking
9 days ago

Beautiful trail, the snow fields near the lake were a bit slick. Might be worth bringing polls or spikes.

hiking
icy
rocky
snow
9 days ago

Hiked 6/25. Unbelievable hike! A couple snow crossings with a good size drop. Highly recommend

hiking
9 days ago

Great hike, steady difficulty the whole way up, not very hard at all besides distance if you’re not seasoned. The views of Longs Peak are great. Leave the trail better than you found it.

hiking
10 days ago

Awesome lake ! Middle of June and the lake is still partially frozen which made it look like the lake was full of ice cubes. Awesome time of the year to have gone. Hike is half shaded and second half you are roasting in the sun if it’s out. Just before the lake is a pass that can be sketchy when snowy. 6-8 inch wide walk area with a 50 ft slide down to rocks. I was happy to have spikes and poles. Some did it with out. A crazy guy ran across with just trail runners. I took the safer approach. One of my favorite hikes to date due to the lake conditions

hiking
10 days ago

Absolutely spectacular!

hiking
10 days ago

Beautiful trail. Varied scenery. Most notable, for us, was having to cross to snow patches close to Chasm Lake. Many people had no problem with this, and no special equipment was needed, but these two crossings can be daunting.

hiking
rocky
scramble
snow
10 days ago

hiking
12 days ago

Got a late start that worked to our benefit. At 9:15 still a few parking spots at the trail head. Saw almost no one on the way up (and < 50 all day). Great trail conditions. One snow patch to cross (< 100 ft) which is a bit dicey, but don't let it deter you to get to the lake, just be careful. The views were awesome and diverse throughout the hike. Only one other small group at the lake when we were there. Was a little buggy at the lake, but no where else. Highly recommend this hike, it won't disappoint.

hiking
icy
rocky
snow
13 days ago

Awesome hike for the four of us...50, 43, 17, 15! The way up was hard but made the way back a breeze. The tundra between the snow field and the rock climb was amazing. Like we were on another planet! So serene with a stream flowing through! Gorgeous!

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