The London Marathon website has called this "the best elite women’s field ever assembled," and they may be right. There are four sub-2:20 women and four more sub-2:22, including world champ Mare Dibaba, Chicago champ Florence Kiplagat and Berlin champ Aberu Kebede. Plus track studs Tirunesh Dibaba and Vivian Cheruiyot (who is making her debut).

The field is stacked as usual with 7 women who have ran under 2:21 and also includes Chicago champion Florence Kiplagat, Berlin winner Aberu Kebede and and former London winners Tigist Tufa (2015) and Aselefech Mergia (2010). Team USA will get some representation from Laura Thweatt and Kellyn Taylor.

Shalane Flanagan has set an American record during her buildup. Desi Linden says she's never been in better shape. And Amy Cragg won the Trials. Do they have a shot at a medal?

Galen Rupp and Meb Kefelzighi, you just caught a major break as Ethiopia definitely didn't select its three best marathoners for its Olympic team. Kenenisa Bekele is staying home as is women's world leader Tirfi Tsegaye. *MB: Ethiopian marathon team announced: Picks are as debatable as Kenya's.

Dibaba and Keitany were 1-2 in LRC's 2015 World Rankings and they'll be joined by three others in the top seven, including defending champ Tigist Tufa, 2010 champ Aselefech Mergia and Chicago champ/HM WR holder Florence Kiplagat. Sara Hall will also compete in a race that holds major Olympic implications for Kenya, Ethiopia and GB.

Once again, London has secured an amazing field with five women who have run under 2:20 and eight under 2:21. All of the top 5 from our 2015 World Rankings are in the field including the winners of 2015 Dubai, London, Berlin, Chicago, New York and Worlds marathons.

Mare Dibaba broke 2:20 and won Worlds this year so she deserves to be #1, particularly when you factor in she was also 2nd in Boston. Speaking of Boston, there, Desi Linden ran the fastest time on the year for the US and placed the highest of any American in a major this year.

Mary Keitany was back on top in NYC showing she's still one of the world's best.

Keitany has been running great since returning from her second pregnancy last year, but she'll have her hands full on Sunday. Aselefech Mergia (Dubai), Caroline Rotich (Boston) and Tigist Tufa (London) have all won major marathons this year, plus the field includes 2013 champ Priscah Jeptoo, two-time runner-up Buzunesh Deba and debutante Sally Kipyego. *MB: 2015 NYC Marathon Women's Race - Who you got in loaded womens' field led by Mary Ketiany?

What a week it was with London, Boston, Drake and Penn. Annie LeBlanc kept rolling at Penn, we've got an excuse for Zersenay Tadese, we tell you why so many of you hate sit and kick races, talk Larry the Legend's underwater treadmill, masters doping and more.

Video highlights.

Tigist Tufa was a 2:40 marathoner 2 years ago. Now she's London champ.

Former champs Mary Keitany, Priscah Jeptoo and Edna Kiplagat and HM WR holder Florence Kiplagat take on Dubai champ Aselefech Mergia and 2014 World #1, Tirfi Tsegaye.