Colorado is hiking Mecca. With 58 peaks over 14,000 feet, four national parks, and more sunny days than San Diego, the Centennial State delivers alpine adventure better than anywhere else in the Lower 48.
Whether you're a casual day hiker or aspiring mountaineer, Colorado has your perfect trail. Here's our definitive guide to the best hiking the state offers.
Rocky Mountain National Park
Colorado's crown jewel sees over 4 million visitors annually, yet solitude is still possible for those willing to hike. The park divides into two distinct regions: the east side (Bear Lake, Longs Peak) and the wilder west side (Grand Lake).
Sky Pond via Glacier Gorge
Rocky Mountain National Park's best day hike. Pass Alberta Falls, Loch Vale, and Timberline Falls before reaching Sky Pond beneath Taylor Peak's sheer cliffs.
Pro tip: Start by 6 AM for parking and afternoon thunderstorm avoidance
Longs Peak via Keyhole Route
The only 14er in Rocky Mountain National Park and Colorado's most dangerous. The Keyhole Route isn't a trail—it's a mountaineering route requiring scrambling and exposure tolerance.
Start time: 2 AM mandatory for summit by noon
Best season: July through September
Chasm Lake
The best view of Longs Peak without the summit risk. Chasm Lake sits at the mountain's base, surrounded by cliffs that plunge into crystalline water.
The 14ers: Colorado's Signature Challenge
Colorado has 58 peaks exceeding 14,000 feet—the most of any state. Climbing them all is a lifelong pursuit for peakbaggers. Here are the best for different skill levels.
Mount Elbert (Easiest 14er)
Colorado's highest point (14,439 ft) is also one of its most accessible. The Northeast Ridge is a steep hike, not a climb. Start early, pace yourself, and enjoy the roof of the Rockies.
Location: Near Leadville
Quandary Peak (Best Beginner 14er)
Close to Breckenridge, well-maintained trail, and manageable distance make this the classic first 14er. Expect crowds on summer weekends.
Maroon Bells (Most Beautiful)
The most photographed peaks in North America are also among the most dangerous to climb. Loose rock, exposure, and route-finding challenges kill hikers every year.
Reality check: This is serious mountaineering, not hiking
Indian Peaks Wilderness
Just south of Rocky Mountain National Park but without the crowds, Indian Peaks offers alpine lakes, jagged ridges, and abundant wildlife. The trailheads fill fast—arrive by 7 AM on weekends.
Isabelle Glacier
Hike past Lake Isabelle to a cirque containing the last remnants of a glacier. Wildflowers explode in late July. The final scramble to the glacier requires route-finding.
Mount Audubon
The easiest peak in Indian Peaks. The trail winds through tundra to a 13,223-foot summit with panoramic views of the Divide.
The San Juan Mountains
Southwestern Colorado's San Juans are the state's most rugged range. Steep peaks, mining history, and wildflower meadows define this region.
Ice Lakes Basin
The most colorful hike in Colorado. Upper Ice Lake shimmers an unreal turquoise from rock flour. Wildflower displays in July rival anything in the Alps.
Location: Near Silverton
Wetterhorn Peak
A Class 3 scramble to one of Colorado's most photogenic summits. The final ridge requires exposed scrambling—not for those uncomfortable with heights.
Great Sand Dunes National Park
North America's tallest dunes rise abruptly from the San Luis Valley like a misplaced desert. The contrast between alpine peaks and sand creates surreal hiking.
High Dune on First Ridge
Walking on sand is exhausting—699 feet feels like 2,000. But the view of the dunes against the Sangre de Cristo Mountains is worth every sliding step.
Best time: Spring or fall (summer sand reaches 150°F)
Mesa Verde National Park
While not alpine hiking, Mesa Verde offers something unique: trails through ancient cliff dwellings. These are cultural hikes as much as nature walks.
Petroglyph Point Trail
Hike past Spruce Tree House to one of the park's best petroglyph panels. The trail follows the canyon rim with views of ancient dwellings.
When to Hike in Colorado
June
Wildflowers begin blooming at lower elevations. Higher trails still snow-covered. Mosquitoes emerge.
July
Peak wildflower season. All but the highest trails are snow-free. Afternoon thunderstorms daily—start early.
August
Monsoon season continues. Wildflowers fade above treeline. Best month for 14ers (stable mornings).
September
Our favorite month. Cooler temperatures, fewer crowds, and aspen gold at lower elevations. First snow possible above 12,000 feet.
October
Aspens peak at elevation. First significant snows close high trails. Perfect for lower elevation hikes.
Altitude Advice
Colorado's elevation affects everyone differently. Visitors from sea level often experience headaches, fatigue, and shortness of breath.
- Spend your first night in Denver (5,280 ft) or Boulder before attempting high hikes
- Drink more water than you think you need—dehydration worsens altitude symptoms
- Avoid alcohol your first few days at altitude
- Descend immediately if you experience severe headache, nausea, or confusion
Final Thoughts
Colorado hiking spoiled us. After experiencing alpine starts above treeline, watching sunrise paint the peaks gold, and breathing thin air on 14,000-foot summits, other hiking feels almost mundane.
But it's not just about the summits. It's the columbine blooming in July, the pika chirping from talus slopes, the sudden afternoon thunderstorm that sends you scrambling for tree line.
Colorado delivers the alpine experience Americans used to travel to Europe for. It's all here, from gentle valley walks to technical mountaineering. The only question is: which trail will you take first?