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.
All FEI-recognized competitions, regardless of discipline, are rated on a "star" system. In eventing, the 4* level is the highest and the 1* level is the lowest of the FEI-recognized divisions.
Additionally, there are many competitions held at levels below the one-star. These competitions are not FEI-recognized, and are usually held under the rules of a country's national governing body.
CCI Competitions are held under FEI rules for Three Day Events, including the General Rules and Veterinary Regulations. They are international three-day events, as opposed to a national competition or a one- or two-day horse trial.
The highest level of competition, advanced level for horses with a good deal of experience and success in international competition. It includes the Olympics (although the Olympics are usually made easier, at more of a three-star level, to allow a greater number of nations to compete successfully), the FEI World Equestrian Games, and six annual horse trials each year: Badminton Horse Trials (Britain), Burghley Horse Trials (Britain), Land Rover Kentucky Three Day (USA), Australian International Three Day Event (Australia), Luhmühlen Horse Trials (Germany), and the Stars of Pau (France).
Advanced level, for horses with some experience in international competition.
Intermediate level, for horses and riders with some experience riding in a three-day event, who are just starting to begin international competition.
Preliminary (USA) or Novice (Britain) level, used as an introductory level to the three-day event.
The CIC may be held over one day, and is thus considered an international one-day event. However, it must follow FEI rules. Additionally, the CIC is held only at the one to three-star levels. There are no 4* CIC competitions.
Cross-country is held over a 3200-4000 m course with 32-40 efforts, and ran at a speed of 570 mpm. Stadium has maximum of 15 efforts and 11-12 obstacles, ridden at 375 mpm, with a course length of 450-550 meters.
Cross-country is held over a 2800-3600 m course with 28-36 efforts, and ran at a speed of 550 mpm. Stadium has maximum of 14 efforts and 10-11 obstacles, ridden at 350 mpm, with a course length of 400-500 meters.
Cross-country is held over a 2400-3200 m course with 24-32 efforts, and ran at a speed of 520 mpm. Stadium has maximum of 13 efforts and 10-11 obstacles, ridden at 350 mpm, with a course length of 350-450 meters.