The Concours Complet International (CCI) and the Concours International Combiné (CIC) are ratings for the equestrian sport of eventing, given by the international governing body for the sport, the FEI.
The original difference between the two formats was that the 4 phases of cross-country (A, B, C, and D) were held in CCI competition, while CIC competition only ran the D phase. With the advent of the new format (which abolished phases A, B, and C), the FEI agreed to change the distances of the CCI to make it more difficult than the CIC competitions. Thus, CIC competitions have fewer obstacles on a shorter course than do CCI competitions.
Read more about Concours Complet International: Starring System, The Concours Complet International, The Concours International Combiné, Other Terms