A lot of good mountain bikers started out riding BMX and that's where they honed their skills. Hills are divided into rollers, doubles, triples, tabletops, step jumps and six-packs. Rollers are single hills which racers speed jump. Doubles are two single hills that the racers try to jump from the first onto the second. Triples are three hills that a rider jumps however the hell he or she can.
Tabletops are hills with flat tops.
Step jumps are hills where the lip is lower than the landing. Six-packs are three sets of doubles that a rider rolls over. The turns on a BMX track are sometimes banked and sometimes flat to slow the riders down. Banked turns are usually made of asphalt to lower maintenance costs. All tracks in Florida are made of red clay.