Level 1: moderate
Fitness: moderate fitness level  -  Technique: some experience on dirt roads and familiarity with riding technique, breaking and handling required.
  Level 2: demanding
Fitness: physically fit  -  Technique: experience on dirt tracks, easy single trails and partly demanding up & downhills required.
Level 3: challenging
Fitness: very physically fit  -  Technique: excellent bike control on demanding open country and single trails required.