Cronin Peak is a high mountain summit in the southern Sawatch Range of the Rocky Mountains of North America. The thirteener is located in San Isabel National Forest, southwest by west (bearing 241ð) of the community of Nathrop in Chaffee County, Colorado, United States. Cronin Peak was named in honor of Mary Cronin, who in 1934 become the first woman to climb all 53 Colorado fourteeners.