Medano Lake via Medano Pass Primitive Road Trail (25.2 mi, Challenging) – Great Sand Dunes National Park

Overview

About Medano Lake via Medano Pass Primitive Road

This 25.24-mile out-and-back starts at the Point of No Return parking area, follows Medano Pass Primitive Road to Forest Service Trail #887, then climbs to Medano Lake. The long road walk is part of the hike; the route does not begin at the upper 4WD trailhead used for the much shorter lake outing.

Why go

Reaches a small alpine lake below a dramatic rocky cirque.
Crosses a varied corridor from the dune foothills through creekside forest to high country.
Leashed pets are allowed along the primitive road and in the Preserve.

Heads up

A long road approach makes this a full-day outing before the lake climb.
Creek crossings, high elevation and afternoon storm exposure add real difficulty.
The Forest Service and NPS access information differ on whether a day-hike permit is required.

Map & elevation

The route

Loading the Great Sand Dunes map

Full map

Elevation8,235–11,627 ft

TrailheadPoint of No Return Parking Area37.75827, -105.50124

Keep this map with you offline in the Parkwolf app

Plan your hike

Before you go

Parking

Start at the Point of No Return parking area on Medano Pass Primitive Road; the NPS identifies parking there, and 2WD vehicles cannot continue beyond it. Hikers follow the road on foot to Trail #887. The Forest Service says visitors must get an access permit at the visitor center, while the NPS day-hike page does not mention one; confirm the requirement before setting out.

Best time to go

The mapped start is the Point of No Return parking area. The road beyond it is restricted to true 4WD vehicles, though hikers can continue on foot. Medano Pass Primitive Road is seasonal, and snow can linger on the high trail into summer. The exposed upper section is vulnerable to afternoon thunderstorms, so an early start matters. Leashed pets are allowed on the primitive road and in the Preserve, but not on the separate Sand Ramp Trail.

Safety

This is a strenuous high-altitude day with about 3,500 feet of ascent and a lake above 11,000 feet. Medano Creek can be deep during spring runoff, and afternoon thunderstorms are common over open high country. Check road and trail access with the park before the trip.

2 active Great Sand Dunes alerts

CautionSwift, deep water on Medano Pass Primitive RoadMentions Medano Pass Primitive Road, referenced in this guideMedano Pass Primitive Road is open, but heavy rain has created swift water up to 3 feet deep, especially at creek crossings 3, 4, and 5.Official details
CautionStage 1 fire restrictionsStage 1 fire restrictions are active throughout Great Sand Dunes; use fires only in designated steel fire rings or picnic-site barbecues.Official details

Great Sand Dunes 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.

Great Sand Dunes Tour Guide

Your drive to Medano Lake via Medano Pass Primitive Road, narrated.

Parkwolf is a GPS audio tour guide for Great Sand Dunes 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.

Recorded for this trailhead

Point of No Return and Sand Pit Trail

0:00 / 0:26

“You're nearing Point of No Return, the last parking area for two-wheel-drive vehicles on Medano Pass Primitive Road.”

Plays as you drive up to this trailhead in the Parkwolf Great Sand Dunes Tour Guide.

Hiking Medano Lake via Medano Pass Primitive Road

Along Medano CreekThe primitive road crosses Medano Creek repeatedly as it winds from the dune foothills into the…

The primitive road crosses Medano Creek repeatedly as it winds from the dune foothills into the Preserve. Expect a long shared-road approach before the narrower Trail #887 begins, and be prepared to cross water rather than follow a dry, separate footpath. The creek crossings can become deep during spring runoff.

The climb to the lakeTrail 887 leaves the road just below Medano Pass.

Trail #887 leaves the road just below Medano Pass. It climbs through spruce-fir forest along Medano Creek to the small alpine lake below a rocky cirque. A short optional walk to the ridge above the lake opens views back toward the dunes; that side trip is not part of the mapped route.

Choose the right versionThe listed hike is roughly 12.

The listed hike is roughly 12.9 miles each way, with about 3,500 feet of ascent and a typical day of around 12½ hours. It is far longer than the roughly 7.4-mile return hike that starts at the upper Trail #887 trailhead after a high-clearance 4WD drive. No potable water is available at the upper trailhead.

Wildlife

Wildlife in Great Sand Dunes

All Great Sand Dunes wildlife maps

16 sightingsElkMost seen around 7 PMSighting map

21 sightingsPronghornMost seen around 7 PMSighting map

12 sightingsWild TurkeyMost seen around 7 AMSighting map

153 sightingsMule DeerMost seen around 6 AMSighting map

38 sightingsRavenMost seen around 9 AMSighting map

15 sightingsRed-tailed HawkMost seen around 11 AMSighting map

Sighting maps show where each species has been reported across Great Sand Dunes. Wildlife moves, so no sighting is guaranteed.

Medano Lake via Medano Pass Primitive Road