CHATTANOOGA, TN (Times Free Press) -- Finishing a marathon is a daunting feat to many. Running marathons in all 50 states seems nearly impossible, and completing marathons on all seven continents sounds crazy.

Truman Smith said his wife, Cheryl, may be one of the people who thinks he is crazy.

In March, Truman Smith completed a marathon in Antarctica and joined the exclusive company of the Seven Continents Club.

Smith, 66, has run 106 marathons since 1987, when his wife recommended that he find a hobby. Smith completed his first goal of running a marathon in all 50 states in 2009. His goal then grew to running a marathon on each continent.

Read more from our news partner the Times Free Press.