CHICAGO, Sept. 24, 2014 /PRNewswire/ -- TAG Heuer announced today that the Luxury Swiss watch brand recognized for breaking the boundaries in traditional watchmaking with its prestigious sports watches and chronographs, has been named the official timekeeper and timepiece of the Bank of America Chicago Marathon. Adding to its title as the official timekeeper and timepiece of the TCS New York City Marathon, this partnership is one element of TAG Heuer's global "Don't Crack Under Pressure" campaign, which celebrates the achievements of individuals who challenge themselves to reach a goal they once thought impossible.