Call it Spring Madness for horseracing fans.

Churchill Downs racetrack is promoting an online fantasy Kentucky Derby game called the "Road to the Roses" in which fans get to choose a stable of 3-year-old thoroughbreds. The winning stable will have the most points after the running of the 139th Kentucky Derby on May 4 and the prize includes tickets to next year's Derby.

The game is free and can be found by click the link below.

Registration begins Friday and runs through March 28.