Haynach Lakes Trail in Rocky Mountain National Park

Rocky Mountain National Park, CO

Haynach Lakes Trail

A long, high-country walk to a boulder-ringed lake basin.

Length
16.3mi
Time
9hr
Elev. change
2,359ft
Difficulty
Challenging
  • No dogs
  • High point 11,135 ft
  • #63 of 136 in Rocky Mountain

Hear the audio tour

Green Mountain Trailhead: Big Meadows in Two Hours

Overview

About Haynach Lakes Trail

Why go

  • Big Meadows, Granite Falls and a high alpine lake give the long route variety.
  • A boulder-ringed lakeshore rewards the climb into the upper basin.

Heads up

  • The 16.3-mile return and high elevation make this a demanding full-day outing.
  • Wet meadows and seasonal stream crossings can mean muddy footing.
Haynach Lakes Trail is a long out-and-back from Green Mountain Trailhead to the east shore of a high alpine lake basin. The mapped route is about 16.3 miles round trip, climbs roughly 2,700 feet, and ends around 11,100 feet. You follow Green Mountain and Big Meadows trails, then the Tonahutu Creek corridor and a final Haynach Lakes spur. This is a full-day choice for hikers who are comfortable with distance and altitude; the lakes are a memorable payoff, but the walk there is the main event.
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Map & elevation

The route

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Full map
Elevation8,776–11,135 ft
TrailheadGreen Mountain Trailhead40.30732, -105.84124
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Plan your hike

Before you go

Parking

Start at the signed Green Mountain Trailhead parking area on the west side of Rocky Mountain National Park. Parking capacity and typical fill times are not established.

Safety

This route climbs to about 11,100 feet and gains roughly 2,700 feet. There is no potable water at the trailhead; treat creek water before drinking. The park entrance fee or pass is required, and seasonal timed-entry reservations may apply depending on when you enter. Pets are prohibited on park trails.

3 active Rocky Mountain alerts

  • ClosureOld Fall River Road closed to vehiclesOld Fall River Road is closed to motor vehicles for the season.Official details
  • ClosureSun Valley burn-area access remains closedThe area and trail west of Sun Valley Trail remain closed, including the route used for angler access to the Colorado River, because of impacts from the 2020 East Troublesome and Cameron Peak Fires;…Official details
See all 3 alerts
A park ranger sits on a dash-mounted phone, talking, as Parkwolf’s Tour Guide plays “Army Cutworm Moths: A Grizzly Bear Buffet” on Grand Loop Road below Dunraven Pass in Yellowstone
Parkwolf Tour GuideThe highest, rockiest slopes around here are a summer buffet for grizzly bears.

Rocky Mountain Tour Guide

Your drive to Haynach Lakes Trail, narrated.

Parkwolf is a GPS audio tour guide for Rocky Mountain National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.

See the Rocky Mountain audio tour

Recorded for this trailhead

Green Mountain Trailhead: Big Meadows in Two Hours
0:00 / 0:23
“Up ahead is Green Mountain Trailhead, where I'd choose Big Meadows for a two-hour mountain walk. It's three point six miles round trip with about six hundred feet of climbing, steepest in the first half mile.”

Plays as you drive up to this trailhead in the Parkwolf Rocky Mountain Tour Guide.

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Trail guide

Hiking Haynach Lakes Trail

Give it a full dayAllow about nine hours with breaks.

Allow about nine hours with breaks. The route starts near 8,800 feet and the climb comes in stages: a sharp early rise, a descent into Big Meadows, and more ups and downs before the final climb. Published mileage for this same Green Mountain approach varies from about 16.3 to 17.2 miles round trip. The mapped line here is 8.15 miles each way and stops at the established east-shore endpoint. Some guides and GPS tracks count a little more, so keep a time buffer and don't add unofficial shoreline paths to the plan.

Big Meadows and the old burnThe first 1.

The first 1.7 miles climb about 700 feet through a narrow drainage with small ponds and seasonal streams. Parts of the hillside were burned in the 2020 East Troublesome Fire; standing trunks and new growth are part of the walk. After a crest, the trail drops into Big Meadows, a wet fen with open views and remnants of an old cabin. The meadow can be boggy, especially when wet, and its flowers and birdlife make this a good place to slow down. Moose and deer have been seen here, but neither is a sure thing.

Follow Tonahutu Creek to the fallsBeyond the meadow, the route follows the creek drainage through smaller openings and crosses…

Beyond the meadow, the route follows the creek drainage through smaller openings and crosses seasonal water. Granite Falls is a terraced cascade over smooth granite slabs, with lower shelves where people can sit near the water. It is a natural pause, though the Haynach junction and lakes are still ahead. Above the falls the trail climbs again through wet meadows and ridges, with wider mountain views as you near treeline.

The long spur to Haynach LakesAt the signed junction, the Haynach spur starts with steep switchbacks for roughly a quarter…

At the signed junction, the Haynach spur starts with steep switchbacks for roughly a quarter mile. It eases through small meadows, then keeps rising and dipping across larger wet meadows and ponds. The lake takes longer to reach than it looks from the junction. The established route ends at the east shore; the water is ringed by boulders and rugged ridgelines, with a rocky outcrop projecting into the lake. That outcrop makes a good rest spot and a strong photo foreground against the water and ridge. Pikas may call from the surrounding rocks, and trout can sometimes be seen below the outcrop.

Access, water and rulesStart at Green Mountain Trailhead on the park's west side; the Tonahutu Creek Trailhead is a…

Start at Green Mountain Trailhead on the park's west side; the Tonahutu Creek Trailhead is a separate, longer approach. There is no potable water at the trailhead, and creek water needs treatment. Overnight backcountry sites lie along the route and require the park's backcountry reservation or permit; the Haynach Llama site is below the lakes, not on the shore. The park entrance fee or pass applies, seasonal timed-entry reservations may apply depending on when you enter, and pets are not allowed on park trails. Check the current entry rules before you set out.

Wildlife

Wildlife in Rocky Mountain

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Sighting maps show where each species has been reported across Rocky Mountain. Wildlife moves, so no sighting is guaranteed.

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