Denver, Leadville and Gunnison Railway

Denver South Park and Pacific Railroad

Alpine tunnel telegraph station
Locale	Colorado
Dates of operation	1872–1894
Successor	Colorado and Southern Railway
Track gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Previous gauge	originally 3 ft (914 mm)

The Denver, South Park, and Pacific Railroad (later called the Denver, Leadville and Gunnison Railway) was a historic 3 ft (914 mm) narrow gauge railroad that operated in Colorado in the western United States in the late 19th century. The railroad opened up the first rail routes to a large section of the central Colorado mining district in the decades of the mineral boom. The railroad took its name from the fact that its main line from Denver ascended the Platte Canyon and traversed South Park. Founded in 1872 by Colorado Governor John Evans, the company was purchased by the Union Pacific Railway in 1880, though it continued to be operated independently. The line went bankrupt in 1889 and was reorganized under the new moniker the Denver, Leadville and Gunnison Railway. When the Union Pacific went bankrupt in 1893, the DL&G lines went into receivership and were eventually sold to the Colorado and Southern Railway. In the first half of the 20th century, nearly all the company's original lines were dismantled or converted into 4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge. The last train to run the old DSP&P tracks was from Como, Colorado on April 11, 1937. A section of the standard gauge line between Leadville and Climax is still operated as a passenger excursion railroad called the Leadville, Colorado and Southern Railroad. At its peak the Denver, South Park and Pacific Railroad had 335 miles (539 km) of narrow gauge line, making it the largest narrow gauge railroad in the state of Colorado.