Defining and grading the technical ability and fitness level required for an activity is a difficult challenge and may not always have a 100% match to every participant, it is however a reliable scale to make sure you are not "over" or "under" qualified for an activity we offer.
A - Basic Fitness
I'm generally a healthy person, I can trek and carry a light backpack during few hours each day; I have some experience in hill-walking/ trekking/ bike riding/ running or any other kind of endurance sport.
B - Good Fitness
I have the basic level of fitness described plus vast experience in trekking/ hill- walking. I can gain about 1,000 meters in 3 hours while carrying a light back pack.
C - Very Good Fitness
The same level described as “good” plus: a proficient level of endurance and the ability to maintain stable performance on long, successive days out. People who define their level at “C” should be able to ascend a 1,200 m slope in a normal day while maintaining a minimal incline of 300 meters per hour with a heavy back-pack (10 kg).
D - Excellent Fitness
All the previous descriptions plus the experience of maintaining a solid performance level in high altitude, while moving on steep alpine terrain.