There are 21 official climbs: Andorra 21 official climbs. Those 21 climbs range from easy to difficult. Their distance ranges from 4.5 km to 25 km. The average gradient is from easy to hard. Off course an average gradient doesn’t say it all. Sometimes you could have a (short) decent which influences the overall gradient heavily. Concrete it means that a climb with average gradient of 5% might be much harder than a climb with average gradient of 7%.
Looking at the profile will tell you a lot. Next to the gradient and distance, it also depends on the weather. We had days where temperature went up to 25 degrees and above, and then, the first kilometers of the climb can be very hard. Luckily the temperature normally drops the higher you climb. When you go above 1800 meters of altitude, it should not be too hot.
Next to gradient, length and temperature it also depends on the length of your ride. When you limit yourself to 1 or 2 climbs a day with total length under 50 kilometers, it might be quite easy. Our Queen stage, with 121 km and + 3500 altitude meters under blue sky and temperatures of 25 degrees was really hard. we all suffered at the end. However, after a shower, some food and during a drink, the memory starts to grow together with the satisfaction and proudness.