St. Peter's Dome, Mountain peak and hiking trail in Pike National Forest, Colorado.

St. Peter's Dome is a granite-topped peak on the Pikes Peak massif in Pike National Forest, El Paso County, Colorado, rising to 9,528 feet (2,904 m) above Colorado Springs. A 2-mile trail with 400 feet of elevation gain starts northwest of the parking lot by the St. Peter's Dome Shooting Range sign. One section is a 10-foot vertical ascent climbed with a knotted rope; from the ledge above, the trail continues to the summit, which looks over Colorado Springs and Cheyenne Mountain.

In the early 20th century the Colorado Springs and Cripple Creek District Railway, known as the Short Line, ran from Cripple Creek through St. Peter's Dome to Colorado Springs. In 1902 about 200,000 people rode the train along the rim of South Cheyenne Cañon. The St. Peter's Dome mining district, first called the Cheyenne District, has operated since 1910, and Kramer Mines bought its mines in 1945.

The name comes from the granite dome that reminded early travelers of St. Peter's. In the early 1900s the Short Line train stopped here so passengers could picnic, hike and camp, and about 200,000 people rode the line along the rim of South Cheyenne Cañon in 1902. A burro and pony trail also led to the dome.

The trailhead is accessed via Old Stage Road and Gold Camp Road, with parking near the starting point. Hikers should wear sturdy footwear and bring water, as the trail is exposed and offers little shade.

The final section to the summit requires climbing with fixed ropes and passes old stairway remnants. These historical structures still show signs of earlier use.