WAYZATA, Minn.--(BUSINESS WIRE)--TCF National Bank (TCF Bank), a subsidiary of TCF Financial Corporation (TCF) (NYSE: TCF), today announced it will be the co-titled sponsor of the Detroit Free Press/TCF Bank Marathon. In its 42nd year, Michigan’s largest road race and the only race to cross international borders twice expects more than 25,000 runners and an additional 50,000 spectators to attend this year’s full weekend of events October 19-20.