Two Olympic medalists (both American), six past champions, and 18 Olympians overall add up to a star-studded professional lineup for the 121st running of the Boston Marathon. Leading the charge will be the defending champions, Lemi Berhanu Hayle for the men and Atsede Baysa for the women, both from Ethiopia. As a group the field has won 15 Abbott World Marathon Majors and 79 international marathon titles. But only two will emerge as champions on April 17. Here are some of the names to watch.

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Lemi Berhanu Hayle, Ethiopia
Meb Keflezighi, USA
Galen Rupp, USA
Yemane Tsegaye, Ethiopia
2016 Boston Marathon Weekend Boston, Mass April 16-18, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Wesley Korir, Kenya
2016 Boston Marathon Weekend Boston, Mass April 16-18, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Sammy Kitwara, Kenya
2016 Boston Marathon Weekend Boston, Mass April 16-18, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Emmanuel Mutai, Kenya
2016 Berlin Marathon Berlin, Germany September 25, 2016 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Jared Ward, USA
Wilson Chebet, Kenya
2015 Boston Marathon Weekend Boston, Mass April 17-20, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409
Geoffrey Kirui, Kenya
2012 World Junior Championships Barcelona, Spain July 10-15, 2012 Photo: Giancarlo Colombo@PhotoRun Victah1111@aol.com 631-741-1865 www.photorun.NET
Sisay Lemma, Ethiopia
2015 Dubai Marathon Dubai, UAE January 23, 2015 Photo: Giancarlo Colombo@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Dino Sefir, Ethiopia
2016 Ottawa Race Weekend Ottawa, Canada May 28-29, 2016 Photo: Bruce Wodder@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Atsede Baysa, Ethiopia
2016 Boston Marathon Weekend Boston, Ma April 15-18, 2016 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Gladys Cherono, Kenya
Buzunesh Deba, Ethiopia
2015 Boston Marathon Weekend Boston, Mass April 17-20, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409
Caroline Rotich, Kenya
2015 Boston Marathon Weekend Boston, Mass April 17-20, 2015 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409
Desi Linden, USA
2015 Boston Marathon Weekend Boston, Mass April 17-20, 2015 Photo: Andrew McClanahan@PhotoRun Victah1111@aol.com 631-291-3409
Edna Kiplagat, Kenya
Joyce Chepkirui, Kenya
2016 Boston Marathon Weekend Boston, Ma April 15-18, 2016 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Valentine Kipketer, Kenya
2016 Boston Marathon Weekend Boston, Ma April 15-18, 2016 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Jordan Hasay, USA
2017 Houston Marathon Weekend Chevron Houston Marathon Aramco Houston Half Marathon ABB Houston 5000 Houston, Tx January 15, 2017 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Rose Chelimo, Bahrain
2017 RAK Half Marathon Ras Al Khaimah, UAE February 10, 2017 Photo: Victah Sailer@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET
Brigid Kosgei, Kenya
2016 Lisbon Rock n Roll Weekend Lisbon, Portugal October 1 + 2, 2016 Photo: Kevin Morris@PhotoRun Victah1111@aol.com 631-291-3409 www.photorun.NET