SOME RACES is a term used to describe a variety of different types of races. DERBIES (7 letters) are races that involve two or more horses competing against each other. RELAYS (6 letters) are races in which teams of runners take turns running a certain distance. Tenks (5 letters) are races that involve running 10 kilometers. Deries (6 letters) are races that involve running a certain distance in a set amount of time. MEDLEYS (7 letters) are races that involve running multiple distances in a single race.