These ratings will assist you in choosing the right adventure for your abilities or experience. Each successive level incorporates conditions outlined in the previous grade(s).
Grade I — Easy/Moderate
Could involve travel over dirt/rough roads and visits to regions where modern medical facilities may not be readily available. Easy, slow-paced activities such as sightseeing, walking tours of 1-4 hours duration or motorized boat/canoe excursions are included. Elevations are generally below 11,000′. Good health is necessary.
Grade II — Moderate
Might include extensive overland travel on dirt roads, boat or motorized canoe excursions, moderate day hikes, river rafting (class II-III rapids) or other outdoor pursuits of 3-6 hours duration. Some trips in this grade may include 1-3 nights tent camping. Elevations up to 13,000′ can be reached. Average fitness is required.
Grade III — Moderate/Strenuous
Indicates an activity-oriented adventure involving up to 6 nights tent camping. Treks average 6-9 miles per day over diverse terrain; rafting is class III-IV rapids; biking averages 20-30 miles per day. Altitudes near 13,000′ are common while elevations as high as 15,000′ may be reached. Good fitness is required. Prior experience is recommended.
Grade IV — Strenuous
Signifies a challenging adventure with activities including up to 14 nights tent camping. Treks average up to 10 miles per day; whitewater rafting through class IV-V rapids; biking averages 30-40 miles per day. Altitudes up to 17,000′ are frequent in trekking programs. Requires very good fitness and stamina. Prior experience is highly recommended.
