33-year-old Kenyan hadn't raced internationally in six years.
Brian Metzler experienced the sights, sounds and smells of the French Quarter by running through it during Happy Hour.
Former Los Angeles Marathon champion and 2:04 marathoner Markos Geneti of Ethiopia is also part of Sunday's star-studded field.
A loaded women's field features Kara Goucher, Shalane Flanagan, Meseret Defar and others.
She hopes to set a new world record for that distance.
Injuries force two top female contenders to the sidelines.
Loaded women's field highlights the 35th edition of the U.S.'s fastest half marathon.
The Ethiopian won her second Olympic 5,000m title -- 8 years after the first.