Certainly. My Chemistry teacher (Marine Veteran) takes us all on the Batonne Death March (26 miles) each year near Ruidoso, NM. We do that fine, but then again we probably are not weighed down with same amount of gear as if we were doing it for real. My next question for you is when you are not training or PTing, will there be time enough to take "extracurricular" type activities like Martial Arts or Night School, while being in the infantry, or should I pursue some other MOS that would allow me enough time for schooling (then transfer to infantry once I finish)?