Sunlight Peak

Yes, it is entirely possible to link Windom Peak, Sunlight Peak, Mount Eolus, and North Eolus in one massive pushing day from a high camp in Chicago Basin. However, doing so requires superb physical endurance, high-level alpine route-finding skills, and a perfectly clear weather forecast. The order matters immensely: most hikers choose to tackle the spicier, more technical Class 3/4 moves on Mount Eolus and Sunlight first, saving the relatively straightforward Class 2 standard West Ridge of Windom for last so they can grind it out even if fatigue has set in.

No, the vast majority of the standard South Ridge route is actually an enjoyable mix of Class 2 hiking and Class 3 scrambling. The official Class 4 rating comes down to just one highly specific, high-consequence spot at the absolute summit: the infamous Sunlight Summit Block. To stand on the true highest point, you must leap or crawl onto granite slabs that are piled directly over a thousand-foot vertical drop into the abyss. While getting up onto the block requires a single, athletic Class 4 move, the psychological exposure is intense, and many hikers choose to touch the base of the rock and call it a day rather than risking the committing, unprotected move to the top.

The stunning, vibrant orange and pink rock that defines Sunlight Peak and the jagged Sunlight Spire is a unique geologic formation known as Eolus Granite. Part of a massive 1.4-billion-year-old Precambrian pluton buried deep within the Weminuche Wilderness, this specific granite is highly prized by mountaineers because it is incredibly solid, blocky, and clean compared to the loose, crumbly volcanic rock found elsewhere in the San Juan Mountains. The distinctive orange hue is caused by a high concentration of potassium-rich feldspar minerals that have been exposed to hundreds of millions of years of alpine weathering.

With hundreds of hikers visiting the basin each summer, waste management is a major environmental concern. The most responsible method is to use a pack-out WAG bag and carry your waste back out to the trailhead. If you must use a traditional cathole, it must be dug 6 to 8 inches deep in organic soil, located at least 200 feet away from any water source, camp, or trail. You must completely pack out all used toilet paper and wet wipes in a sealed plastic bag; never bury them or leave them under rocks, as animals will quickly dig them up.