UCI World Tour 2021 26 2021-09-02 2021-09-02 The early climbs on stage 18 are remarkably difficult yet again. The Alto del Gamoniteiro is the final HC category climb of the 2021 Vuelta a España, and might well be the most difficult climb of the race. At 15 kilometres and almost 10% on average. Pure climbers will be desperate to gain time on the better time-trialists here. 1102238