Kiprono Defending Bloomsday Title
He is joined by two other previous champions of the 12K race.
He is joined by two other previous champions of the 12K race.
New Zealand ace will be up against world-class runners from Kenya and Ethiopia.
Young up-and-comers in the sport are favored in 37th edition of the storied race.
Record field of 4,550 runners tour Boston's Emerald Necklace.
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