St. Mary's Glacier Trail

The trailhead for St. Mary's Glacier Trail is located near Idaho Springs, Colorado. Parking is available in paid lots at the trailhead. Due to the trail's popularity, especially on weekends, it's advisable to arrive early to secure a spot.

Yes, the trail is dog-friendly. Dogs are permitted on-leash, so please ensure your furry companion is kept under control and that you clean up after them.

The St. Mary's Glacier Trail can be hiked year-round, offering different experiences. Summer and fall provide generally clear conditions, though snow can be present even in warmer months. Winter hiking is possible but requires appropriate gear like snowshoes or micro-spikes due to deep snow and icy conditions.

There are no specific hiking permits required for the trail itself, but there is a fee for parking in the designated lots at the trailhead.

The trail offers diverse scenery. You'll hike through a forest of pine and aspen before reaching the beautiful alpine Saint Mary's Lake. Beyond the lake, you'll encounter the Saint Mary's Snowfield, which is a semi-permanent snowfield, not a true glacier. Higher up, panoramic views of the surrounding Rocky Mountains are a highlight.

The terrain is generally rocky and can be steep in sections. The initial three-quarters of a mile climbs through a forest. After reaching St. Mary's Lake, the path to the snowfield becomes even steeper and rockier. Good footing and appropriate footwear, like hiking boots, are essential.

The trail starts at over 10,000 feet, which can be challenging for hikers not acclimated to high altitudes. It's important to be aware of potential altitude sickness symptoms, stay hydrated, and take your time. The total elevation gain to the base of the snowfield is approximately 1,200 feet.

Given the rocky terrain and high altitude, sturdy hiking boots are a must. Layers of clothing are recommended due to changing weather conditions. Bring plenty of water, snacks, sun protection, and a map or GPS. In winter, add micro-spikes or snowshoes, and be prepared for colder temperatures.

The primary route to the snowfield and lake is an out-and-back trail. While there are other paths in the area, the main hike to the notable features follows the same route in and out.

Yes, as the trail is located within Arapaho National Forest, standard Leave No Trace principles apply. This includes packing out all trash, staying on marked trails, respecting wildlife, and being mindful of fire restrictions. Always check the latest regulations before your visit.

Due to its popularity and proximity to Denver, the trail can get very crowded, especially on weekends and holidays. To avoid the busiest times and increase your chances of finding parking, it's highly recommended to arrive early in the morning, ideally before 7 AM.