Movement mildly affected in one arm and one leg on the same side.

Mildly affected movement or coordination in the lower trunk and legs.

Absence of one lower leg from the knee.

Movement and coordination moderately affected in one leg.

The absence of one hand.


C4-5 riders include those with coordination affected to a low level on one side or in the legs, moderately in one leg or the absence of limbs.

Riders in this class are grouped because they have a compromised start or delivery of power. They race using a factored clock which runs slightly slower for C4’s.