Trek Colorado 14ers

On a Sunday afternoon in late July 2026, lightning struck near the 14,265-ft summit of Mount Blue Sky — the one Colorado 14er with a paved road to the top — killing a 15-year-old hiker and injuring four other people. In July, Colorado averages 5,350 lightning flashes a day, and the first cells build over the high peaks by midday. Here is the convection regime, how to build a start time backwards from the summit, the altitude overlay that makes 'land Friday, summit Saturday' the worst plan in the state, and why September is the smart-money window.

Every standard route on a Colorado fourteener is summed up by one small integer: Class 1 through 4 on the Yosemite Decimal System. The number grades the hardest move your hands will make — and nothing else. Not exposure, not rock quality, not the storm window, not the body count: 'Class 3' Longs Peak has killed 19 people above the Keyhole, and 'Class 4' Capitol Peak killed five in six weeks in 2017, mostly parties inventing shortcut descents on rotten rock. This is the scale decoded through five real mountains — Quandary (1), Bierstadt (2), Longs (3), Capitol (4) and the Bells Traverse (low 5) — plus the prominence math that can't settle whether Colorado has 58 fourteeners or 53, and the October 2025 GNSS survey that may rewrite the ranked list by 3.6 inches.