Beginner:

Number of days: one or two days bike tours.
Distance per day:
20 to 40km.
Support vehicle:
Usually vehicle follows the bikers, even is not a required condition
Bike pace:
A beginner bike tour leaves you the chance to follow an easy quiet pace and close to small towns
Fitness and technical requirement:
Beginners bike tours do not have technical nor physical requirement.
Type of roads:
Usually we bike over pave or easy dirt roads on flat ground.

Intermediate:

Number of days: two or more days bike tours.
Distance per day:
25 to 45km.
Support vehicle:
Its presence depends on each trip.
Bike pace:
Its pace is more demanding than a beginner tour. Bikers need to be more shape, handle uphills climbing, although they won´t be required to have previous experiences
Fitness and technical requirement: Intermediate bike tours have a minimum fitness and technical ability requirement through the dirt roads and single tracks covered
Type of roads:
pavement roads, single tracks and dirt roads. Five to seven hundred meter elevation gain.

Advanced:

Number of days: three or more.
Distance per day:
45 to 65km.
Support vehicle:
Its presence depends on each trip.
Bike pace:
An advanced bike tour leaves you the chance to follow your own pace, but there will be an established distance to be covered. Bikers will need to be in shape and have previous experiences.
Fitness and technical requirement: 
Advanced bike tours have a substantial fitness and technical ability requirement through the dirt roads and single tracks covered. It is possible to run stages above 2000 meters over the sea level.
Type of roads:
Single tracks and dirt roads. Five to twelve hundred meters uphill per day.

Expert:

Number of days: nine or more.
Distance per day:
50km or more.
Support vehicle:
Its presence depends on each trip.
Bike pace:
An expert bike tour leaves you the chance to follow your own pace, but there will be an established minimum distance to be covered. Bikers will need to be in shape and have previous challenging bike trip experiences and technical ability.
Fitness and technical requirement: 
Expert bike tours have an important fitness and technical ability requirement through the dirt roads and single tracks covered. Stages might be designed between 2000 and 4000 meters over sea level.
Type of roads:
Single tracks and dirt roads. More than one thousand meters uphill per day.