Three champion Kenyans will be among those taking on the fast course.
The fast Berlin course was the home of yet another record.
Patrick Makau had been cleared to represent Kenya in London.
Emanuel Mutai will replace him on the Kenyan team.
He returns to London this weekend.
He defeated London Marathon champion Emmanuel Mutai.
Course-record holder returns to defend his crown.
The depth of talent is unbelievable.
A surprise winner and a course record highlight the day's action.
Reigning London Marathon champion Emmanuel Mutai gives his thoughts heading into Sunday's New York City Marathon.