Over 10 years ago, a group of friends decided to dance the Ukrop's Monument Avenue 10k presented by Kroger together. Since then they've created a legacy crew that's a must-see at the race. The Jammin' Grannies are on course at the Ukrop's Monument Avenue 10k every year, and they continue to up their dance game. Nan & Kam get in on the action...and the costumes. We recommend YouTube for this one!