Put simply, these are the toughest biking challenges that the Dolomites can offer.
Whether you're looking for easy cruises (https://fatmap.com/guidebooks/19949/experience-ladin-culture-on-these-3-badia-bike-rides) fun, mini-adventures (https://fatmap.com/guidebooks/19955/big-mountains-fascinating-culture-:-biking-in-badia) or tough, long enduro rides (https://fatmap.com/guidebooks/20114/big-views-big-challenges-:-tough-rides-in-the-dolomites), the Dolomites has you covered. Even if you're part of the 10% for whom only hard, technical rides will do, the area is also a must-visit destination, and this your guidebook to it.
We've got 4 hard biking adventures in here and only advanced (not mention fit) riders need apply. All of the rides described in here involve long ascents, as well as tough, sustained and technical descents. Fortunately (this is the Dolomites after all) the rides are all served by an array of incredible mountain huts, and all take you through some of the finest scenery in Europe.
So if you've got through all the routes in the 3 "easier" guidebooks linked above, and are still ready to take another step up, get working on these 4 mega-adventures!