Melika Mejdou of Morocco won the women's race.
He improved it by nearly a minute.
The first finisher was an Army Staff Sergeant who was given a 1.9-mile lead.
Record field of 4,550 runners tour Boston's Emerald Necklace.
Kenyan runners headline men's and women's races.
Kenyan Julius Kogo takes overall crown at Crim 10 Mile Road Race. Fasil Bizuneh, a New Balance athlete who trains with Greg