Unfamiliar
A little different from home, there may be language barriers or different ways of doing things, still quite comfortable, may be unpredictable parts or some rugged terrain.
Challenging
Different accommodations, attitudes or methods of riding are used to normal riding at home, may have challenging terrain, long days or itinerary changes, may involve camping or not so comfortable accommodation. An appetite for exploration and new experiences required.
Extreme
Extreme adventure, very challenging terrain and possible extreme or fast changing weather requiring adaptation of the itinerary, must be very flexible, good humoured and fit.