 flat racing is a form of horse racing which is run over a level track at a predetermined distance. it differs from steeplechase racing which is run over hurdles and harness racing where horses race on a level track, but in harness and pulling a sulky. flat racing is a test of speed, stamina, and the skill of the jockey in determining when to restrain the horse or to impel it. many different horse breeds are used in flat racing worldwide, but the thoroughbred is the most dominant. the majority of north american races are flat races, and in that part of the world "horse racing" generally refers to thoroughbred flat racing unless qualified otherwise. flat racing takes place on track surfaces suitable for horses. worldwide, the most common is a natural grass surface, called "turf". in north america, the most common surface is a harrowed "dirt" surface, often based primarily on a mixture of sand and local soil. worldwide, some races are now run on a synthetic or "all-weather" surface, generally a blend of sand with synthetic fibre and/or rubber, often coated with wax or a similar substance. ==flat racing in great britain==  flat races in great britain are run over a variety of distances from five furlongs  to over  and are generally called sprints, middle distance or stayers races. in great britain, (and the majority of europe) flat racing is split into two distinctive bands, conditions races and handicaps. *conditions races are further split into: **pattern races ***group 1 - (classics and other races of major international importance) ***group 2 - (less important international races) ***group 3 - (primarily domestic races) **listed races - have less prestige than the group races but are still more important than handicaps. *handicap races - where the jockey club official handicapper gives horses a different weight to carry according to their ability, are the bread and butter daily races although some of these are also quite prestigious. classic races - in british horse racing, the classics are a series of horse races run over the flat (i.e. without jumps). each classic is run once each year and is restricted to intact horses that are three years old (in other words, geldings are barred); two of them are further restricted to fillies only. there are five classic races: *2,000 guineas stakes *1,000 guineas stakes *epsom oaks *epsom derby *st. leger stakes ==flat racing in north america==  the majority of flat races in north america are written for and limited to thoroughbreds. races up to  are common with {{convert|1.2
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