List of grade milestones in rock climbing

In rock-climbing, a first free ascent (FFA) is the first redpoint, onsight or flash of a single-pitch, multi-pitch or bouldering climbing-route that did not involve using aid equipment to help progression or resting — the ascent must thus be performed in either a sport, a traditional, or a free solo manner. First-free-ascents that set new grade milestones are important events in rock climbing history, and are listed below.

Source: Wikipedia — List of grade milestones in rock climbing (CC BY-SA 4.0)