Suitable for anyone who can ride a bike and can manage a bit of exercise. There might be the odd climb and descent, but on the whole - easy! Distances of between 25-40 kms/15-25 miles per day.
For the leisure cyclist who exercises regularly and perhaps goes for a weekend cycle trips on roads or trails at home. Fitness is more important than technical ability for tours of this level, as the road surfaces will be smooth and the hills gentle. Distances of between 40-60 kms/ 25-37 miles per day.
Suitable for reasonably fit people who are confident riding distances. Longer cycling days mainly on tarmac, with potentially jeep trails, broken tarmac but no real off road. There may be some hills and descents but not too many. Distances of between 50-80 kms/ 30-50 miles per day.
Long cycling days and tougher terrain requiring specific experience of more demanding and technical cycling. Vehicle support may sometimes be more limited; the routes can contain rough tracks, so some off-road riding skills are an advantage. You should be confident of your physical condition and bike handling skills. In some cases the distances may be low but due to heat or altitude, the riding is still a challenge.
Serious expeditions designed for serious bikers, which are either unsupported or very long hard tours. Riders should be happy to undertake long tough rides up and down steep mountains or following very technical trails in testing conditions. A high level of fitness required, as well as proven mountain biking or road riding skills.