Medano Lake Trail

Overview

Medano Lake Trail is a remote, moderately challenging alpine out-and-back to a timberline lake in the Preserve. It’s 8.3 miles total (round trip) with about 2,293 feet of climbing and typically takes around 4.8 hours. Expect a true backcountry feel and far fewer people than the dunefield—this one rewards prepared hikers who don’t mind earning their views.

The Hike

From just below Medano Pass, the path climbs through spruce–fir forest and meadows, often near Medano Creek, before breaking into rockier, rougher tread as you near timberline. Cairns help mark the upper stretches. Medano Lake sits right at the edge of the alpine; hike the ridge above it for distant, memorable looks toward the Great Sand Dunes. This is excellent bighorn sheep habitat—keep your eyes up. Anglers also target the lake, so pack a filter and respect sensitive shorelines.

Access and Road Conditions

Getting to the trailhead is the crux. It sits off Medano Pass Primitive Road—a rough, 22-mile 4WD route with deep sand and nine creek crossings. High-clearance 4WD is required; smaller SUVs are not recommended. The road is generally passable only in warmer months, and spring runoff can make crossings hazardous. Plan extra time (the full primitive road often takes 2.5–3 hours to drive) and expect very limited parking at the trailhead.

Best Time to Hike

Aim for late summer into early fall when the road is driest and afternoon storms are a touch less volatile. Snow can linger and block alpine routes from November into June. March–October sees the most feasible conditions, but spring brings higher, colder creek crossings. Mid-summer afternoons often deliver thunderstorms—start early and be ready to turn around if weather builds. Late September into early October can be especially scenic along the pass.

Tips, Rules, and Safety

• Bring a water filter—there’s flowing water along much of the route, but you’ll still need to carry plenty.
• Expect occasional downed trees. Step carefully on loose rock above treeline and follow cairns.
• Pets are allowed on leash; keep them close around wildlife and on rocky sections.
• A permit is required to access this area through the park; pick it up at the visitor center before heading out.
• Dispersed camping is allowed, but stay at least 150 feet from water and practice strict Leave No Trace.
• Hunting is permitted in the Preserve during legal fall seasons; wear bright colors and be aware of dates.

Who Will Love It

If you’re after an alpine lake, panoramic dune vistas from high in the Sangres, and real solitude—plus you have the vehicle and skillset to handle the primitive road—this is a gem. Strong hikers can extend beyond the lake to Mount Herard for an even bigger day and unmatched views of the dunefield.