Fittest U.S. City? Despite all that political fighting, it's D.C. Who knew? After D.C., the fittest U.S. cities in the top five were Minneapolis, Portland, Ore., Denver, San Francisco and San Jose, Calif. Joining Memphis in the bottom five were Louisville, Ky.; Oklahoma City; Indianapolis; Carmel, Ind.; and Nashville, Tenn. by Michael McEnaney