She's running the New York City and Chicago Marathons.
Registration for 45,000+ runner race closes in a record six days.
He ran sub-2:19 at altitude.
She needs to stay with pacemaker Patrick Rizzo.
It will be 70 degrees by the time many runners finish the race.
She is the older sister of two-time Olympic gold medalist, Tirunesh Dibaba.
The marathon is timed when the city most needs the tourists dollars.
A dozen very fast East Africans join the fray.