They have unique goals at Sunday's race.
The marathon finish gets the green light.
He's struggled with drug and alcohol problems since he became a celebrity.
Coverage begins on Sunday at 9:00 a.m. ET.
The field ranges from seasoned runners to debutants.
She’s won seven marathons in 18 months.
Over 1,000 trees were affected by the freakish weather.
He will run his first marathon on Sunday.
He will be posting to his editor real-time via Twitter.
He isn't counting his sub-optimal 2:20 showing in Los Angeles earlier this year.