5th anniversary of the Boston marathon bombings

Five years after bombs exploded near the finish line of the Boston Marathon, families of victims laid wreaths at the site of the blasts.

Having seen Shalane Flanagan become the first home woman to win the New York City Marathon in 40 years last November, United States fans are looking forward to tomorrow's Boston Marathon with rising hopes of a similar landmark victory.

Reigning Chicago Marathon champion Galen Rupp and a host of top U.S. women's contenders could produce the first American title sweep in 35 years at Monday's (today's) 122nd Boston Marathon.

"This is my 7th time running Boston", Wallace said.

Galen Rupp wins the Chicago Marathon in October 2017.

The cloud on Hasey's horizon, however, is that she has reportedly been suffering from a foot injury.

The run will be noticeably different for him this year.

Hasay, third in the race past year, was advised by her doctor and team on Sunday that she needed more time to recover fully so there would be no long-term injury, the marathon said in a statement.

The question will be how much longer Kiplagat, now 38, can maintain her winning form.

Kiplagat, 37, pulled away with more than five miles remaining past year to win at Boston in 2:21:52.

Shalane Flanagan becomes the first USA woman since 1977 to win NYC Marathon. She was also second to Rose Chelimo in the World Track and Field Championships marathon and fourth in NY.

On Sunday night, just hours before the 2018 Boston Marathon, elite race sponsor John Hancock announced that Jordan Hasay, the top returning American woman from 2017, has withdrawn from this year's race.

Men's victor Geoffrey Kirui running the 2017 Boston Marathon in Nike.