Race Registration can be done through Margaritaville Run in Nashville. Earn extra Margaritaville Run flair when you enroll in our St. Somewhere Challenge Program. The St. Somewhere Challenge program is FREE for participants! Run two or more live and in-person Margaritaville Run 5Ks within the same calendar year and you’ll qualify to earn an extra pin to be added to the ribbon of your finisher medal!