Possible Clues:

• The longest foot race of all
• Race of just over 26 miles
• Race victim of stabbing to hospital — nothing new there
• Very long run
• Long foot race
• In a way disturbed or hurt an athlete
• Long run (with a wall to get through!)
• Roman hat (anag) — race
• French journalist gaining British title in the long run
• 26-mile foot race