Athletes aren't the only ones getting a workout during this 10-k road race. So are their running shoes.    

"Very often, by the time you see excessive wear on your shoe, you've worn the shoes 100 or 200 miles too long," said Dr. Perry Julien, a Podiatrist.

Dr. Julien recommends keeping track of the mileage on your sneakers. They're only meant to be used up to 500 miles.   

"Letting a shoe go past its lifespan can lead to injuries," said Dr. Julien.    
That's what happened to Julie Beverly. Running 20 miles a week has taken a toll on her old shoes and her body.    

"The ones i had are old and worn out and they turned in and actually they were making the back of my ankle hurt," said Julie Beverly, a runner.    

Experts argue the single most important way to keep your feet healthy  is to buy shoes that fit your foot size and type and your style of running.    

"When you combine those two elements, function, appropriateness with comfort, then hopefully you're on the right track for successful running and happy feet," said Gregory Sheats, a running shoe salesman.     

Happy feet and hopefully an easier work out.