It's a way to get some exercise, keep your walking path tidy, and earn rewards.
"I walk about 10,000 to 12,000 steps a day. I have my pedometer on," Susie Stout said.
She's not just walking. Susie Stout is also picking up litter.
"I did Turkey Creek Greenway one time and I got 34 gallons, that's one of the big black trash bags full," she said.
She's part of a Keep Knoxville Beautiful program called Green Miles.
Allison Teeter is Executive Director.