Credit: Splash News

Sean Lowe has officially wrapped up filming The Bachelor 17, which means the time has come for him to travel around the good ol' USofA flexing his ab muscles.

Sean hit up Ashley Hebert and JP Rosenbaum's Bachelorette wedding in California on December 1, and now he's in Las Vegas running for Zappos.com's Rock and Roll Marathon Series, which benefits the Crohn's and Colitis Foundation of America! Sigh, such a do-gooder.

Sadly, Sean didn't come in first, but check out this devastatingly handsome picture of him wearing a tanktop over a t-shirt. Best of both worlds, right guys?

Just remember: what happens in Vegas, stays in Vegas.