Possible Clues:

• Worker purchasing grass before hard race
• Running battle?
• Since 1921, the standard length for one of these has been 26 miles 385 yards
• Starburst is to Opal Fruits as Snickers is to ____
• Mother with artist, though briefly, before November race
• Revolutionary darling, in the long run
• Staff covering grass before hot old race
• Arab blocking American subject running race
• Scene of Greek victory over Persians in 490BC
• Island accommodating rodent house in the long run