Getty Images
Juli Windsor trains for the Boston Marathon
Juli Windsor training for the Boston Marathon at indoor track.
Getty Images
HD: Super Slo-Mo Shot of Young Man Throwing Javelin
HD 1080p: LR Pan, Super slow motion shot of young man throwing javelin
Getty Images
Personal trainer training two athlet girls
Personal trainer training two athlet girls: they run and he checks the time on a digital tablet.
Getty Images
HD Female athletes sprinting
Medium shot of female athletes at the finish line. Shot with LEICA Vario-Apo-Elmarit-R 70-180mm f/2.8 lens.
Getty Images
MS relay athletes running over finish line, Australia
MS relay athletes running over finish line, Australia
Getty Images
MS tilt up to athletes running to camera on track, dipping for finish, Australia
MS tilt up to athletes running to camera on track, dipping for finish, Australia
Getty Images
MS high speed Top view relay athletes passing on baton, Australia
MS high speed Top view relay athletes passing on baton, Australia
Getty Images
MS relay athletes running over finish line, Australia
MS relay athletes running over finish line, Australia
Getty Images
People running the Boston Marathon
/ people running the Boston Marathon prior to the bombing / young women yelling, 'you go girl' to runner.
Getty Images
MS relay athletes running over finish line, Australia
MS relay athletes running over finish line, Australia
Getty Images
MS high speed Top view relay athletes passing on baton, Australia
MS high speed Top view relay athletes passing on baton, Australia
Getty Images
MS tilt up to athletes running to camera on track, dipping for finish, Australia
MS tilt up to athletes running to camera on track, dipping for finish, Australia
Getty Images
Manhunt in Boston for Marathon Bomber
Police officers on the scene in Watertown. Manhunt in Boston for Marathon Bomber on April 19, 2013 in Watertown, Massachusetts (Footage by Getty Images)
Getty Images
Boston Marathon Bombing Memorial
Boston Marathon Bombing Memorial at Copley square on May 09, 2013 in Boston, Massachusetts (Footage by Getty Images)
Getty Images
Greek Wins Boston Marathon Race of 1946
50th annual marathon race in Boston / men running down rural road, suburbs of Boston / spectators cheer runners on / Stylianos Kyriakides from Athens, Greece, crosses finish line in downtown Boston to win the race. Greek Wins Boston...