Vacations are fun, but when you've got a triathlon coming up in a month, you've got to be constantly vigilant about your fitness.

And six-time NASCAR Sprint Cup Series champion Jimmie Johnson certainly is someone who pays close attention to his fitness and training regimen.

The Jimmie Johnson Foundation Cane Creek Sprint Triathlon takes place July 26 at Cane Creek State Park in Waxhaw, N.C. The event consists of a 500-yard swim, a 13-mile bike ride and a 5K run.

More from FoxSports