A racecourse is a path or track that competitors use to for a particular race. Usually there is only one racecourse, but that makes it hard for people with different skills and preferences to have an equal chance at completing the race and to find the right level of challenge. Offering different racecourses for different racers can make the race more fair and fun.

grassy race trackwith fence around
The racecourse for the horses is grass and haas a fence around it.
Dreamstime site: http://www.dreamstime.com/royalty-free-stock-photo-racecourse-image3458825