Rides are classified by difficulty in terms of speed, terrain, and distance.
B: 13-16 mph steady pace
C: 10-13 mph pace, stops at key points to wait for riders
D: Under 10 mph relaxed pace, frequent stops to wait for everyone
1. Multiple long and/or steep climbs
2. Multiple and/or large hills
3. Rolling with some hills
4. Generally flat or rolling
For example, C/4/30 designates a 30 mile ride at 10-13 mph pace over flat terrain.