Fall Hiking in the Colorado Rockies: 5 Must-See Trails in Rocky Mountain National Park

Why Fall Is the Best Time to Hike the Rockies

When autumn rolls into Colorado, something magical happens. The mountains turn gold. The air gets crisp. And the trails? They become golden tunnels of aspen leaves, framed by jagged peaks dusted with the season’s first snow. Whether you’re a seasoned trekker or just love a scenic stroll, fall hiking in Rocky Mountain National Park is a bucket list experience.

We’ve handpicked five of our favorite trails where fall colors shine brightest. From short scenic loops to rewarding summit hikes, here’s where to point your boots this season.

🥾 Bierstadt Lake Trail

Distance: 3.2 miles round trip
Elevation Gain: ~625 feet
Difficulty: Moderate
Trailhead: Bear Lake Road (Bierstadt Lake Trailhead or Bear Lake)

If you only have time for one autumn hike in RMNP, Bierstadt Lake is a solid pick. You’ll ascend through golden aspen groves before emerging onto a high plateau where the lake mirrors the surrounding peaks. Early morning is best for reflection shots—think gold trees, glassy water, and sunrise alpenglow. Pure Colorado magic.

This moderate hike gives you a big reward for minimal effort. And if you're up for it, consider making it a loop by starting at the Bear Lake trailhead and ending at the Bierstadt lot. Just be sure to check shuttle schedules before you go.

🍁 Bear Lake Loop

Distance: 0.8 miles loop
Elevation Gain: Minimal
Difficulty: Easy
Trailhead: Bear Lake

This is RMNP’s most accessible and beloved fall hike—and for good reason. The Bear Lake Loop is short, sweet, and surrounded by vibrant aspens that reflect in the clear water like a postcard. You’ll also see towering spruces, exposed granite, and plenty of benches for taking it all in.

Because of its ease and proximity to the parking lot, it gets busy. Visit early morning or mid-week to beat the crowds. And if you want more, Bear Lake connects to Nymph Lake, Dream Lake, and Emerald Lake—perfect for building your own scenic day hike.

🌊 Alberta Falls Trail

Distance: 1.6 miles round trip
Elevation Gain: ~200 feet
Difficulty: Easy
Trailhead: Glacier Gorge

This one’s all about the combo—vibrant aspens, cool canyon air, and a thundering waterfall at the turnaround point. Alberta Falls is especially photogenic in the fall, with golden leaves fluttering around its rocky cascade.

It’s a well-maintained, relatively flat trail that’s perfect for families or folks adjusting to the altitude. Bring a light jacket—the shady gorge stays cool, even on sunny days.

Pro tip: Bring a thermos and have a little coffee break near the falls—it’s one of the best spots in the park to just soak it all in.

🏔️ Deer Mountain

Distance: 6 miles round trip
Elevation Gain: ~1,200 feet
Difficulty: Moderate to Challenging
Trailhead: Deer Ridge Junction

If you're craving views—and don’t mind working for them—Deer Mountain delivers. This out-and-back hike climbs steadily through pine forests and fall-colored valleys before opening up to a sweeping 360° panorama at the summit. On a clear autumn day, the golden hues spill across the hills like brushstrokes.

Though the climb is steady, the trail is well-graded and offers plenty of rest points. It's popular but not overrun. And the views? They’ll stick with you long after you’re off the trail.

🌲 Loch Vale

Distance: 5.4 miles round trip
Elevation Gain: ~1,000 feet
Difficulty: Moderate
Trailhead: Glacier Gorge

Want it all? Loch Vale brings it. This alpine lake hike offers cascading streams, thick pine forests, and fiery bursts of color in fall. While the climb is a little more sustained, it’s gentle enough for intermediate hikers, and the destination is worth every step.

The lake itself is dramatic—surrounded by cliffs, high peaks, and the occasional early snowfall, contrasted against the fiery yellow of aspens. Bring layers and be prepared for wind at the top!

This is a photographer’s dream trail, especially in late September when the color contrast is at its peak.

🎒 Tips for Fall Hiking in Rocky Mountain National Park

• Go early: Morning light + fewer crowds = ideal conditions.
• Layer up: Weather shifts fast. Bring a windproof layer, gloves, and a beanie.
• Hydrate: Even in cool weather, altitude can sneak up on you.
• Use shuttles: Bear Lake Road gets hectic. Take the park shuttle if lots are full.
• Respect wildlife: Fall is rutting season for elk. Stay back and give them space.

📍 When to Visit for Peak Fall Colors

Peak fall color in the Rockies typically hits from mid to late September, but it can vary depending on elevation and weather. Lower valleys peak later than higher elevations. Keep an eye on the Rocky Mountain NP conditions page for updates.

📚 Want More Fall Hiking Ideas?

Check out our reviews of fall hiking boots, cozy layers, and trail snacks that make your autumn treks even better.

🙋‍♀️ FAQ: Fall Hiking in RMNP