Sunlight Peak, Mountain summit in La Plata County, United States.

Sunlight Peak is a mountain summit in the Needle Mountains of southwestern Colorado, rising within the San Juan National Forest as part of the Rocky Mountains. The summit block is made of steep, exposed rock on all sides, making it one of the more demanding peaks among Colorado's Fourteeners.

The peak was named in 1902 for the long hours of direct sun it receives due to its open position above the surrounding terrain. The Needle Mountains were mapped in the late 1800s by survey teams crossing the region during the broader geological exploration of the American West.

The name Sunlight Peak, given in 1902, is likely descriptive of the light the summit receives. The peak is one of three fourteeners in the Needle Mountains, along with Mount Eolus and Windom Peak, and all three lie near Twin Lakes in upper Chicago Basin. Climbers often combine them in a single trip.

The most common approach goes through Chicago Basin, which can be reached from Needleton station on the Durango and Silverton Narrow Gauge Railroad. Spending a night in the basin before the climb is a good idea, as the route is long and afternoon storms are common at this elevation.

The last section of the route requires a Class 4 climbing move across a gap in the summit block, which is unusual for a peak that many approach as a hiking objective. This short but exposed move catches some visitors off guard, even those who have climbed other peaks in the area.