This journey from Constância to Serra da Estrela is not only a great challenge at all levels but a remarkable experience. During the entire tour you will be accompanied by the Zêzere river, since the point where it flows into Tagus river, from the place where, it is born in Serra da Estrela, next to Vale Glaciar. Along the journey you will find some of the most beautiful river beaches of the country, and here you will have difficulty in finding motor traffic as it is almost nonexistent. Everything is amazing, from the overwhelming landscapes to the delicious snacks awaiting us,.You find out that the bike can take you anywhere and this is a real revelation and an incredible feeling. As we approach the mountainous Serra da Estrela, the desire to reach the top increases. The feeling of reaching the Tower, the highest point of Serra da Estrela and of Portugal, will allow you to talk about this conquer in a unique way.