Originally Posted by
Amt0571
How are you supposed to climb using such high gearing?
Since you live in Spain you must have a local road cycling club that know the terrain and gearing, ask them what set-ups are required.
Road bikes are designed for quick gearing changes to match the gearing to the rider/terrain, it's been figured out for the last century or so and modern machines have a plethora of efficient options.
The pic above shows the gearing Contador was using in the Giro's nasty mountain stages in '13.
Since you are fit making the transition to the road will be easy if you get w/ the local road club, some of the top pro cyclists came from a MTB background.
-Bandera