Home//St. Marys/CrossFit Gyms2 Best CrossFit Boxes in St. Marys, We found 2 CrossFit gyms and boxes in St. Marys. 1. CrossFit Fernandina5(31 reviews)32097 Yuleewww.crossfitfernandina.com+1 904-755-2614Why CrossFit Fernandina?Show details → 2. CrossFit Camden4.8(12 reviews)31548 Kingslandwww.crossfitcamden.com+1 860-287-1346Why CrossFit Camden?Show details →Commission paid and other benefits can influence a gym's ranking. Learn moreMore Gyms in Cities Near St. MarysKingsland1 gymYulee1 gymJacksonville3 gymsBrunswick1 gym