Forecasted temperatures for Monday's race are in the 80's.
Deep international fields highlight the 116th running of the world's oldest annual marathon.
Defending champions will face strong competition on April 16.
Mario Fraioli breaks down the top contenders in each race.
Scenarios abound in the determination of the men's winner.
WMM contenders Gebremariam, Kiplagat lead respective fields in Daegu, Korea.
Olympic medalists Deena Kastor and Catherine Ndereba highlight the women's field.
It's a race she's long wanted to run.
Reigning Boston Marathon champ dominates star-studded field.