Mount Bierstadt, Rocky Mountain summit in Clear Creek County, Colorado.

Mount Bierstadt is a 14,065-foot summit in the Rocky Mountains and counts among Colorado's Fourteeners, peaks that exceed 14,000 feet. A well-used trail ascends from the west through marshland and alpine meadows to reach the top.

Albert Bierstadt made the first recorded ascent in 1863, accompanied by his guide William Byers. The peak was later named in his honor. His painting A Storm in the Rocky Mountains, Mt. Rosalie grew out of sketches made during that 1863 visit, though the summit the party actually reached is ambiguous in the account.

The Mount Evans Wilderness area surrounding the peak maintains strict regulations for preservation, including limits on group sizes and camping practices.

The main route starts at Guanella Pass and covers about 7 miles round trip with roughly 2,400 feet of elevation gain. The trail is technically straightforward but visitors should prepare for thin mountain air and changing weather conditions.

From the summit, a class 3 route follows a ridge called The Sawtooth to Mount Blue Sky, overlooking Abyss Lake in the valley between the two peaks. Albert Bierstadt's 1863 visit produced sketches behind his painting A Storm in the Rocky Mountains, Mt. Rosalie, which shows Mount Spalding or Mount Blue Sky from the Chicago Lakes.