CrossFit Tuebor is a fitness facility centrally located in the heart of Fenton, MI. Our expert coaching staff anticipates and welcomes all ability levels in a class setting, while catering to your individual needs. Whether you are just beginning your journey to health or have been in the fitness industry for years we would love to meet you! Single class drop in fee is $20.CrossFit Tuebor is a fitness facility centrally located in the heart of Fenton, MI. Our expert coaching staff anticipates and welcomes all ability levels in a class setting, while catering to your individual needs. Whether you are just beginning your journey to health or have been in the fitness industry for years we would love to meet you! Single class drop in fee is $20.