WHAT IS C-RALLY??? C-Rally is the next level up from D-Rally...it is a one-day competition combining Dressage, Stadium Jumping, and Cross-Country as well as Stable Management. The only differences between D- and C -Rally are that the dressage tests are harder, the stadium jumps are higher and more gruelling, and the cross-country course is more difficult. For C-level riders and above, this is a great experience for both you and your horse.