Longs Peak is Colorado's most celebrated high-altitude summit, drawing climbers and hikers with its sheer granite faces, sweeping alpine scenery, and storied mountaineering history.
Longs Peak has drawn adventurers since the late nineteenth century, when naturalist John Wesley Powell led one of the earliest recorded ascents in 1868. Sitting within Rocky Mountain National Park, the peak has long served as a proving ground for American alpinism, and its storied history is woven into the broader legacy of Colorado mountaineering.
The standard Keyhole Route is the most traveled path to the summit. Hikers pass through subalpine forest, cross the expansive Boulderfield, and squeeze through the famous Keyhole notch before navigating the Ledges, the Narrows, and the final Homestretch slab to the top. The terrain above the Keyhole is Class 3, requiring hands-on scrambling and careful route-finding, making the mountain a genuine challenge rather than a simple walk-up.
Lower on the mountain, the trails through Goblin Forest and along Chasm Lake offer rewarding destinations for those not attempting the full summit. The view of the Diamond, Longs Peak's vertical east face rising above Chasm Lake, is among the most dramatic alpine scenes in the Rockies and well worth the hike on its own terms.
Longs Peak rewards careful preparation and genuine effort, offering an experience that is both physically demanding and visually unforgettable.
Start your summit attempt by 3 a.m. to clear the exposed upper mountain before afternoon thunderstorms roll in, which are common from July through August.
Bring at least three liters of water and high-calorie snacks; the Keyhole Route covers roughly 15 miles round trip with more than 5,000 feet of elevation gain.
Wear layers even in midsummer, as temperatures near the summit can drop sharply and wind chill is significant above treeline.
Visit the Longs Peak Trailhead area in September for cooler, more stable weather and far fewer crowds than the peak summer season.
Obtain a wilderness camping permit in advance if you plan an overnight stay at the Boulderfield camp, which fills quickly during the summer climbing season.
Take on a guided high-altitude trek toward Longs Peak
Follow Glacier Creek trails with beginner-friendly routes and mountain views
Ride forest and meadow trails with Continental Divide views