Related Clues:

• Political activity
• Hyphen
• 10K or marathon
• Beat quickly, as a heart
• Morse code T
• Fast race
• Career
• See 24 Down
• Boston Marathon, e.g.
• Code unit
• Indy 500, for example
• Beat too fast, like a heart
• Compete at Indy
• Emulate Jeff Gordon
• Talladega 500, e.g.