Lance Armstrong competes in Maryland triathlon

Lance Armstrong enters the water with Meg Shipman, a fellow cancer survivor from Annapolis, Md., as they begin the Half-Full Triathlon in Ellicott City, Md., on Sunday.

Lance Armstrong cuts through the water on Centennial Lake in the .9 mile swim during the Half-Full Triathlon in Ellicott City, Md., on Sunday.

Lance Armstrong emerges from the water at Centennial Lake after finishing the .9 mile swim portion of the Half-Full Triathlon in Ellicott City, Md., on Sunday.

Lance Armstrong cycles on Triadelphia Road in rural Howard County, Maryland as he competes in the Half-Full Triathlon.

Competing with other cancer survivors, Lance Armstrong crosses the finish line in the Half-Full Triathlon.

With a wave to his fans, Lance Armstrong closes in on the finish line after competing in the Half-Full Triathlon.

After crossing the finish line, Lance Armstrong gets a bear hug from 29-year-old cancer survivor Jessica Protasio of Annapolis, Md.