Check out photos, videos and a live stream of the 2013 Shamrock Shuffle in Chicago.
Wheeling's Danni Allen, the winner of NBC's Biggest Loser, is preparing for Sunday's race.
The Shamrock Shuffle kicks off running season in Chicago this Sunday. Race Director Carey Pinkowski talks about changes to the race this year and tips for runners.
Watch the race live on NBCChicago.com this Sunday through 11:15 a.m.
Uhl joins Olympian Dathan Ritzenhein and "Biggest Loser" winner Danni Allen for the race.
Danni Allen of Wheeling named Season 14 winner of "The Biggest Loser."