Philadelphia Marathon

Donna joined Back On My Feet just for the free shoes, but she got so much more.

After surviving the 2013 Boston attacks, one stubborn non-runner suddenly has her sites set on a marathon—with her marathoning mother.

If you still want to run a marathon in 2015, here are great races with open registration.

Race director Desiree Bell operates one of the top-10 marathons in the country.