Edna Kiplagat, a Kenyan policewoman and two-time world champion marathoner, finished first in the women's race with a time of 2:21:52.
A four-time Olympian who earned a silver medal in Athens in 2004 and won the 2009 New York City Marathon - both times also ending long American droughts - Keflezighi's 2014 win in Boston is one of the signature moments in the race's century-old history.
Marcel Hug won Boston for the third time, outpushing 10-time champion Ernst Van Dyk down Boylston Street and finishing in 1:18:04 to beat the course record and world best by 21 seconds.
She pulled ahead of Rose Chelimo of Bahrain in the Newton hills to win by 59 seconds.
Kirui finished with a time of 2:09:37, edging out American Galen Rupp, for his first Boston Marathon victory.
In the men's race today in Boston, Kenya's Geoffrey Kirui won for his first marathon victory ever.
Galen Rupp, 2012 Olympic silver medalist for 10,000 meters and 2016 Olympic bronze medalist for the marathon, is among the contenders, and probably the top USA threat in the men's race. In his last competitive Boston run, he finished 13th in 2:17:00 despite pain in his quad muscles.
Are US-Russia relations at 'all-time low?' Trump says so
Washington blames Russia's ally, Syrian president Bashar Assad, while Moscow says Syrian rebels are responsible. The chemical attack prompted President Trump to order a missile strike at a Syrian military air base last week.
Where: Hopkinton to Boston, Mass. And for that, she has a simple answer: "I knew if I [stopped] no one would believe women could run distances and deserved to be in the Boston Marathon", she wrote on her website.
Manuela Schar of Switzerland finished in 1 hour, 28 minutes, 17 seconds - shattering the world best by more than five minutes. In 1967, Katherine Switzer, became the first woman to officially enter the Boston Marathon.
The American drought reached nearly three decades from the time Lisa Larsen-Weidenbach won in 1985 until Meb Keflezighi ran down Boylston Street to raucous chants of "U-S-A!" in 2014, the year after the finish line bombings killed three people and wounded more than 260 others.
Pablo Eduardo is a MA resident and internationally known sculptor. Switzer formed 261 Fearless, a nonprofit running club for women that has groups across the country.
Update 10:55 a.m.: Though some athletes have already completed the marathon's 26.2 miles, others haven't even started the race yet.
After he crossed the finish line, Keflezighi ran over to kiss the members of the Richard family, who lost their 8-year-old son Martin in the bombings. The elite women racers started at 9:30 a.m., followed by the elite men at 10 a.m.
Update 10:40 a.m.: The Boston Athletic Association announces the victor of the men's push-rim: Marcel Hug.
- Android 7.1.1 Nougat update reportedly rolling out to Nokia 6
- Uber says net revenue outpaced losses in 2016
- Police ID 4 found slain in park in suspected gang killing
- David Villa scores a screamer from 50 yards
- Tusk, May to maintain regular contact during Brexit negotiations
- Some show kids school is safe after San Bernardino shooting
- Samsung Galaxy S6 Nougat Update Insults S7 Users
- Kylie Jenner Cozies Up to New Man at Coachella -- Sorry, Tyga
- Google reaches out-of-court deal with Russian Federation in Android case (YNDX)
- Talk-radio host Alex Jones argues persona in custody dispute