Colorado's Front Range and San Juan Mountains deliver high-alpine drama — wildflowers, 14ers, and turquoise lakes that reward an early start.
Most high-altitude Colorado trails are snow-free July–September. Afternoon thunderstorms are common — start before 7am at elevation. Hanging Lake requires timed-entry permits.
Most don't, but Maroon Bells Scenic Loop has timed-entry shuttle requirements June–October, and Hanging Lake requires a paid timed-entry permit. Always check trailhead before driving up.
Mid-June through mid-September. Plan to be off summit ridges by 11am-noon. Lightning strikes have killed hikers on every major Colorado peak — start at sunrise or earlier.
Sleep at moderate elevation (Denver/Boulder) for 1–2 nights before attempting anything above 12,000 ft. Hydrate, descend if symptoms worsen, and consider a slow ramp up.