Rupp said his last few weeks of training have gone well but his buildup was not ideal. "It was a quick turnaround and I had to really focus on my health."
American women have been breaking national marathon records this year and Conner Mantz, a 25-year-old from Utah, had a stellar marathon debut for the men. But can Americans win major races?
NYC Marathon champion Albert Korir looks to defend title apnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from apnews.com Daily Mail and Mail on Sunday newspapers.