Most major races, including the New York City Marathon, require runners to provide photo identification when picking up a bib. Most provide bibs only a few days before the race, shortening the window in which someone could copy a bib.
Une Famille D'Assassins [Microforme]: Portraits, Biographies Et Condamnation Des Trois Meurtriers D'Arundel: Francois Narbonne, Le Pere, Age de 79 ... Le Fils, Age de 25 ANS: ... (French Edition)