The invited athletes met with the press on Friday.
Joan Benoit Samuelson joins the Boston Marathon field.
Under the ruling, Deena Kastor would no longer own the American marathon record.
The 39th edition features $116,400 prize purse.
Olympic bronze medalist and American-record holder Deena Kastor will be there.
It's a race she's long wanted to run.
The race includes recycling and composting from start to finish
The women's running pioneer also to be inducted into Sports Museum of New England Hall of Fame.
The two Boston legends will race an inaugural 10K later this month.
Joan Benoit Samuelson will be there.