Ratings:

O – Applies to a variety of uncomplicated outings (i.e. city walks, bike rides, trail hikes, backpacking). May involve simple off trail hiking not requiring navigation skills. Climbing level: Class 1 terrain.

I – Includes outings that involve cross-country travel where navigation is necessary. Rougher ground than “O” outings may be traversed and the use of hands for balance may be necessary. Includes outings that have snow travel or skiing on easy terrain. Climbing level: Class 2 terrain.

M – Includes moderate level climbing ability. On rock, the hands are used for climbing. Some participants may want a safety belay. On snow, safety dictates the use of ice axes and the ability to self-arrest. climbing level: Class 3 terrain.