EDINBURGH - MAY 22: Unidentified athletes compete in the Edinburgh Half Marathon on May 22, 2011 in Edinburgh, United Kingdom.
Editorial use only
Editorial credit: Brendan Howard / Shutterstock.com

Royalty-free stock photo ID: 77706172

EDINBURGH - MAY 22: Unidentified athletes compete in the Edinburgh Half Marathon on May 22, 2011 in Edinburgh, United Kingdom.