17-year-old Mary Cain wins women's Wanamaker Mile.
Bernard Lagat going after American, world records in rarely run 2,000m event.
Also competing will be Alan Webb, who is retiring from professional running to focus on triathlon
The special event will honor the late Finnish distance running legend as part of the Millrose Games.
The teenage sensations will square off in February.
Four top middle-distance runners are gunning for the American 1K record.
The New York City running body has increased its commitment to indoor track.
The U.S. Olympian moved to New York from South Sudan in 2001.
Edward Cheserek breaks boys high school mark in the same race.