January 16, 2014 (CHICAGO) --Some big changes are coming to this year's Chicago Marathon. Runners will be guaranteed spots in the race, but only if they have participated in a marathon within the past two years and under certain conditions.
Men must have completed a marathon in less than 3 hours and 15 minutes. Women must have finished in less than 3 hours and 45 minutes. A lottery will be held for non-guaranteed spots.
Registration for the marathon begins March 5.