Mount Bierstadt is the 14er most people reach from Guanella Pass

Mount Bierstadt is one of Colorado’s 14,000-foot peaks, and it is among the more approachable ones, which is exactly why it draws crowds. It sits in the Mount Evans Wilderness, and most hikers start from the Bierstadt Trailhead on the Guanella Pass road.

To reach the trailhead, leave Interstate 70 at Georgetown and follow the Guanella Pass road, also signed as County Road 381, south for about 9 miles. The trailhead sits near the top of the pass. From there the trail drops through willows, crosses a creek, then climbs steadily to the summit ridge. The route is well used but it is still a high-altitude climb, with thin air and a long stretch above treeline.

A few things shape a safe day here. The high country is often not snow-free until late June or July. Afternoon thunderstorms are common in summer, so most people start very early to be off the summit by midday. The Guanella Pass road itself is seasonal, opening to the top in late spring and closing in late fall, so check that it is open before you drive up.

Because the peak is close to Denver and not technical, parking fills early on summer weekends. Arriving at dawn helps with both the weather and the crowd.

For trailhead access, road status, and current conditions, check the Arapaho and Roosevelt National Forests.