Lance Armstrong

Lance Armstrong #100 crosses the finish line during the 112th Boston Marathon on April 21, 2008 in Boston, Massachusetts. (Photo by Jim Rogash/Getty Images)

Will Ferrell

Funnyman Will Ferrell wasn't joking when he ran the Boston Marathon in 2003. (Photo by Jason Merritt/Getty Images)

Mario Lopez

Mario Lopez ran the Boston Marathon in 2002 for Big Brothers Big Sisters of America. (Photo by Jason Merritt/Getty Images)

Elisabeth Hasselbeck

'The View' host Elisabeth Hasselbeck ran the Boston Marathon as a bandit runner in 1999, shortly before graduating from Boston College. (Credit: Jemal Countess/Getty Images)

Lisa Ling

Journalist and former View host Lisa Ling ran the Boston Marathon in 2001. (Photo by Frazer Harrison/Getty Images)

Ali Landry

Actress and former Doritos girl Ali Landry ran the Boston Marathon in 2002. (Photo by Alberto E. Rodriguez/Getty Images for Elizabeth Glaser Pediatric AIDS Foundation)

Valerie Bertinelli

Jenny Craig spokesperson Valerie Bertinelli completes the Boston Marathon four days before her 50th birthday April 19, 2010 in Boston, Massachusetts. The actress ran the prestigious race to raise funds and awareness for the Dana-Farber Cancer Institute. (Photo by Darren McCollester/Getty Images/for Jenny Craig)

David James Elliott

Actor David James Elliott, perhaps best known for his role on CBS's 'Jag', ran the Boston Marathon in 2004. (Photo by Michael Buckner/Getty Images)

Joan Van Ark

Joan Van Ark ran the Boston Marathon back in 1979, around the same time she debuted on Dallas and Knot's Landing. (Photo by Michael Buckner/Getty Images)