Charles Hicks, a former British runner, is among three men targeting Conner Mantz's American marathon record at the Chicago Marathon. Hicks, who recently switched allegiance to the USA, ran 2:04:35 at the Boston Marathon. Clayton Young and Vinny Mauri also aim for the record.

Hicks, 25, has increased his mileage and trained at altitude. Young, who suffered a hamstring tear, still plans to compete. Mauri, self-coached, has a unique training regimen. The race promises a significant American marathon storyline. Read more racing coverage.

The women's race features Brigid Kosgei, who holds the world record, and defending champion Hawi Feysa. Other contenders include Sharon Lokedi, Loice Chemnung, and Sutume Kebede. The race will be broadcast on TNT Sports and NBC5 Chicago. Related: Brigid Kosgei Returns to Chicago Marathon with Tokyo Record Fresh.

This original Runner World brief is based on reporting from Athletics Weekly. Visit the source for its complete reporting, context and any later corrections.