WIKI: The King of the Mountains (KoM) is the title given to the best climber in a cycling road race; usually and officially known as the Mountains classification.

 

While the title may be given to the rider who achieves the highest position over several designated climbs in a single-day road race, it is more usually applied to stage races (for example, the Grand Tours, Tour de France, Giro d'Italia, Vuelta a España and smaller races like the Tour of California) where points are accumulated over the duration of the whole race.

 

In the Tour de France, at the top of each significant climb, points are awarded to the riders who are first over the top. The climbs are categorised from 1 (most difficult) to 4 (least difficult) based on their steepness and length. A fifth category, called Hors categorie (outside category) applies to mountains rated even more severe than first category. Similar ratings apply to climbs in the other major Tours.