A 19-year-old is among the favorites to win the April 14 race.
The 28-year-old will use the Rock 'n' Roll New Orleans Half Marathon as a stepping stone to the Rotterdam Marathon.
Yemane Tsegay is expected to do great things there.
He defeated Moses Mosop who had wanted to run a world record there.
He says the course is a fast one.
He is now running for himself and hopes to medal at Worlds.
He competed in a race that raised money for a special-needs school.
He's struggled with injury this year, but his agent says he's ready to race.
However, at 80 years of age, Ed Whitlock set a new age-group record.