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Tsegay is making his marathon debut in Chicago.
Kimetto comes to Chicago with a 2013 marathon win already under his belt.
With less than 24 hours to go, Chicago is set for the Chicago Marathon, drawing competitors and spectators from all over the world.
For one runner, in particular, making it through Sunday's Chicago Marathon will be an especially hard-fought achievement. Boston resident Lee Ann Yanni was injured in April's bombings at that city's
After a neck-and-neck finish in the 2102 race, Rita Jeptoo, of Kenya, and Atseda Baysa, of Ethiopia talk about their matchup this year.
Kenyan Rita Jeptoo and Ethiopian Atseda Baysa will duel again this after a photo finish in 2012.
The clock is counting down to the start of this year's Bank of America Chicago Marathon.