Depending on which fourteener classification system you use, I’ve climbed 28 of the 54 fourteeners in Colorado (peaks over 14,000 feet in elevation, or higher than 4,300 meters for everyone else in the world). I was lucky that I got to spend part of a summer in the Marble area (Elks/West Elks), and the following summer in the Leadville area (Sawatch Range). Not so much in the Sangre de Cristos and the San Juans though.
Front Range
Longs Peak–The Classic. I don’t even know how many times I’ve climbed Longs Peak, since I lived right across the road from the trailhead for a few summers. The Keyhole. North Face/Cables Route, including once in the winter. Kieners Route. The Loft. Grand Slam.
Grays Peak–North Slopes
Torreys Peak–South Slopes, Dead Dog Couloir, Kelso Ridge
Mt Evans–Southwest Slopes
Mt Bierstadt–West Slopes, Sawtooth Ridge, East Ridge
Pikes Peak–East Slopes, and the tram a number of times
Tenmile-Mosquito Range
Quandary Peak–East Slopes, Cristo Couloir
Lincoln
Democrat
Bross
Cameron
Sherman–Fourmile Creek route
Sawatch Range
Mt Massive–East Slopes
Mt Elbert–East Ridge
Belford
Oxford
Missouri
Antero–West Slopes
Yale
Princeton
Harvard
Columbia
Sangre de Cristo Range
Nope, never got down that way.
Elk Range
Maroon Peak–South Ridge
North Maroon Peak–Northeast Ridge, Maroon Traverse
San Juan Range
Redcloud
Sunshine
Handies