I don't believe that a bicycle is special equipment.  Bicycles are pretty common and most people know how to ride them.  It's not like scuba diving equipment or rock climbing equipment, which require training and knowledge to use. Although I have not been on this trail, I rated the cache using Clayjar's Geocache Rating System.  I used the following assumptions:  Length of more than 10 miles A well marked/defined hardpack trail Some light overgrowth Some elevation changes on the trail  "Cache may be very well hidden, may be multi-leg, or may use clues to location." Using these inputs, I got a rating of 3/4.  You can try this by going to Clayjar's Geocache Rating System.
Ken (a.k.a. Highpointer)