SIOUX FALLS, S.D. (KELO) — It won’t be long before runners will be lacing up their running shoes for this year’s Sioux Falls ...

Police Detective Lt. Kristina “Tina” Zell probably never imagined that one day she’d become a marathon runner. Until that was just what she did. Now, for the second year in a row, she’ll also be ...

SIOUX FALLS, SD (KELO) — It was an action packed morning for runners in Sioux Falls. KELOLAND Chief Photographer Kevin Kjergaard followed half marathon racers in this year’s Sioux Falls Skedaddle from ...

It's the same for most runners, as the body can't cool down during exertion, and heat makes that even harder. "One thing about marathoners is typically we're kind of stubborn," Grinvalds, 68, said.

Paul Grinvalds has completed 114 marathons in all 50 states, but he still wilts when he races in temperatures beyond 60 degrees Fahrenheit.