Recreation Region: Aspen - Sopris Ranger District

Four Pass Loop - West Maroon to Buckskin

ALERTS:

• Bear canisters are required for all backpackers in the Maroon Bells-Snowmass Wilderness.
• Advance reservation permits are required for overnight stays in the Maroon Bells - Snowmass Wilderness Overnight Permit Zones.

Get Permits

The famous Four Pass Loop backpacking route within Maroon Bells – Snowmass Wilderness is an international treasure. This 26 mile (42 km) circuit climbs over four mountain passes higher than 12,000 ft, past clear alpine lakes and among the rugged Elk Range peaks.

Make sure to plan ahead and know before you go! Early summer snowmelt makes the river crossing perilous and deep snow persists on the passes until late in the summer. Sudden thunderstorms can catch travelers exposed far from the cover of tree-line in mid-summer and snow fall returns to the high country early.

The Four Pass Loop is considered a difficult and challenging route due to the elevation and terrain.

Current Conditions

<strong>The Four Pass Loop is often snow-bound from October through June.</strong>

General Information

A permit is required for overnight stays in Maroon Bells-Snowmass Wilderness Overnight Permit Zones. This permit must be acquired in advance at recreation.gov.
For all other overnight trips to the Maroon Bells-Snowmass Wilderness, registration is required at the trailhead.

Maroon Bells - Snowmass Wilderness regulations protect this special place:

Overnight permit required for overnight stays within the Maroon Bells-Snowmass Wilderness Overnight Permit Zones.
Food, trash and any scented items must be stored in an IGBC approved bear resistant container. Human food habituated bears are a threat to human safety. Visitors without approved bear resistant containers will be ticketed and required to leave.
You must have a plan for human waste. Human waste bags (WAG) bags are highly recommended and are available free of charge at the Conundrum Creek and Snowmass Lake trailheads. WAG bags must be packed out. Learn more about how to use a WAG bag. If a WAG bag is not used, visitors are required to deposit solid human waste in holes dug 6 to 8 inches deep at least 200 feet (70 paces) from water, camp and trails.
Group size is limited to 10 with no more than 15 stock animals in one group. Large groups multiply impacts to the wilderness and disrupt the solitude of others

Fees are charged for high season overnight stays in permitted zones of the Maroon Bells - Snowmass Wilderness, and for parking and shuttle reservations at Maroon Bells Scenic Area.