CNN —The 128th edition of the Boston Marathon takes place on Monday with 30,000 runners from over 100 countries expected to participate. Here’s what you need to know ahead of this year’s race. How to watchThe men’s and women’s wheelchair divisions get the Boston Marathon underway, setting off at 9:02 a.m. and 9:05 a.m. Eastern Time. The elite men’s race begins at 9:37 a.m. Decorated Kenyan distance runner Hellen Obiri, who won her first major marathon in Boston last year, headlines the women’s race alongside former New York City Marathon champion Sharon Lokedi.

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Persons: Evans Chebet, Robert Kipkoech Cheruiyot, Chebet, Eliud, Gabriel Geay, Hellen Obiri, Sharon Lokedi, Sara Hall, Des Linden, Keflezighi, Zdeno Chara, Rob Gronkowski Organizations: CNN, Boston Marathon, Patriots, ESPN2, Eurosport, New York, Marathon, London Marathon, Boston, Boston Bruins, Patriots ’ Locations: Hopkinton, Boston, Europe, FloSports, Australia, Tanzania, Massachusetts