Once the flag is dropped the route runs on a false flat for almost 20 kilometres before a drop and a rolling section take the riders to the foot of Alto de Udana. This is a 7 kilometres climb at 3.7%, which is crested after 50 kilometres.
A two stage descent runs to Alto de Mandubia – 6 kilometres at 5.9% -, and after this climb one peak follows after the other at intervals of some 20 kilometres. Firstly Alto de Santa Ageda, a tough 8.6 kilometres toil at 6,7%, and then onto Alto de Alkiza, which is a 4 kilometres ascent at 6.5%.
Atop the next mountain, Alto de Andazarrate, there are 60 kilometres left to race. The climb itself is 5.9 kilometres at 6.3% and then the route continue to the last climb. Alto de Mendizorrotz amounts to 7.7 kilometres of climbing at an average gradient of 5%. Still 10.5 kilometres to go at the top, mostly downhill, yet the last 3 kilometres are flat.
Three intermediate sprints – at kilometre 131.7, at kilometre 141.6, and at kilometre 153.3. There are no time bonuses in the Tour of the Basque Country.
Tour of the Basque Country 2017 stage 3: Route maps, height profiles, and more
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Climb details Alto de Mandubia
Climb details Alto de Santa Ageda
Start and finish at Google maps