Top 10 bike climbs in Europe with the greatest elevation gain. We have documented most of the 10 European Bike climbs with the most elevation gained and those are featured in the slideshow on this page as well as the Table for the full Top 10 European Bike Climbs. The cycling climbs gaining the most altitude in the EU, and some of the hardest and most scenic European bicycling climbs are, in order of elevation gain, 1. Teide, Santa Cruz de Tenerife, 2. Mount Etna, 3. Teide, El Medanao, 4. Teide, Los Cristianos, 5. Pico Veleta - Granada, 6. Teide, Playa La Arena, 7. Roque de Los Muchacho, 8. Pico de Veleta, 9. Pico de las Nieves, Maspalomas, and 10. Teide, Puerto de la Cruz