Ethiopian Ejegayehu Dibaba has pulled out due to injury.
A documentary about the Boston Marathon is due out next year.
These spring marathons have developed worldwide appeal.
The reigning Chicago and Boston Marathon champion will be eligible to compete again on Oct. 30, 2016.
Several former Boston winners are among the field of 36 elite runners.
The pair leads a strong contingent of runners that will compete in the race's 119th edition on April 20.
The Kenyan was tested in late September before defending her Chicago Marathon title.
23,546 runners are accepted into the race, slated for April 20.
The field size for the 2015 race will not exceed 30,000 runners.
Senior editor Mario Fraioli is looking forward to being part of the Boston Marathon's storied history next April.