Of the mass-start full stages, the longest was stage 7 at , and stage 15 was the shortest at , the shortest in the history of the race (as of 2017[ [update]]). There were three time trial events with a total distance of , two were competed individually (13 and 20) and one was by raced by teams (the prologue). It was the first time the team time trial format was used for a Tour prologue stage. Of the remaining 22 full and split stages, twelve were officially classified as flat, four as medium mountain and six as high mountain. There were three summit finishes: stage 8, to Puy de Dôme; stage 11, to Orcières-Merlette; and stage 15, to Superbagnères. The highest point of elevation in the race was at the summit of the Col du Tourmalet mountain pass on stage 16a. It was among seven first-category rated climbs in the race. The Tour included four new start or finish locations: Basel, in stage 1b; Marche-en-Famenne, in stage 4; Le Touquet, in stage 6b; and Gourette, in stages 16a and 16b.