It's Boston calling: 2012 winner Korir returns as Saina debuts in Marathon Majors

Former Cherangany MP Wesley Korir crosses the finish line in a past race [Courtesy]

Boston Marathon, an IAAF Gold Label road race, has released the list for its 123rd edition to be run on April 15.

The line-up features nine previous winners and includes six men with sub-2:06 personal best and six women with personal faster than 2:21.