There are four significant climbs today: Villamagna (category four), Pietragrossa (three), Santa Maria de Criptis (three) and San Silvestro (four).
Thus this day, short but potentially pivotal and thrilling, could decide the overall winner, with three significant climbs in succession.
The Pyrenees and Alps await and on what few significant climbs the peloton has tackled thus far, Froome has looked to have the beating of his rivals.
Not to be confused with the Vista Chinesa, whose treacherous descent claimed, among several others, the men's and women's road race leaders, Vincenzo Nibali and Annemiek van Vleuten, in serious crashes, the Grumari Circuit boasts two significant climbs.
— After two days of sprint finishes by a largely intact peloton, the Tour of California will receive a sharp jolt Wednesday, when the route includes two significant climbs in what will probably be the toughest day of riding in the Tour's three-year history.
Most of the significant climbs in the Tour route are given a 1 to 4 score, with 1 being the hardest, 4 the easiest.
However, as soon as the race hit the first of 10 laps around Florence, featuring two significant climbs, the Italian squad took over the pace-setting and Cavendish fell away.
