BlackFin is Orange Park’s original CrossFit affiliate! We have the most qualified trainers with over 10 years of experience.”, ‘Welcome to BlackFin CrossFitBlackFin is this area’s original CrossFit affiliate. We have the most qualified trainers with over 10 years of experience. You won’t find any gimmicks at the Fin. We are straight up, real, and family owned and operated. Nobody should travel through their life journey alone. Come check us