Related Clues:

• 10K or 50-yard dash
• Go like the dickens
• Word with ''horse'' or ''human''
• Competed in derbies
• Rev at high speed
• Meet heat
• Ran fast
• Competed in a sprint
• Tore along
• Horse _____
• It goes to the swiftest
• "Amazing" contest of reality TV
• A long one may have several legs
• Go pitapat
• It may be on its last leg