Related Clues:

• Word with "human" and "rat"
• 5K, say
• Indy 500, e.g.
• Big seller, supposedly
• Iditarod, for one
• Word before worker or symbol
• Where 'They're off!' may be heard
• Sprint, for one
• Sprint or dash
• Marathon or 10K
• Kinsey topic
• Unscientific human grouping
• __ ed
• Pre-election activity
• Object of some drives