Related Clues:

• "8 ___"
• Race distance, sometimes
• Race length
• Large margin
• Sizable margin
• Hiker's measure
• Event not run in the Olympics
• Defeat in a footrace
• Unit of length
• Race that once had a four-minute barrier
• 63,360 inches
• 80% of the Kentucky Derby
• Race distance
• Denver's elevation
• Length unit