Related Clues:

• 80% of the Kentucky Derby's length
• Four laps, perhaps
• Marathon division
• Everlast "Had to walk a ___ in his shoes"
• "Country" distance
• 63-Across distance, perhaps
• Country __ (long way)
• Race that's about 6.2 mi. long
• Marathon marker figure
• Fitbit unit
• Big victory margin
• Distance I left myself to cover
• Number on a highway marker
• Distance race
• Distance with a four-minute barrier, once