Five return, but the New York men's race will be no mere re-run, as each brings new success and confidence.
Tune in Sunday morning to watch returning champions and exciting newcomers battle through the streets of the five boroughs.
Desisa, the two-time Boston champion, says on Monday he can beat the 2:05:59 he posted in November to win New York City.
Desisa will be going for his third Boston Marathon win; Rotich her second.
Several former Boston winners are among the field of 36 elite runners.