For decades, the standard Navy Physical Readiness Test (PRT) has relied on running (1.5 miles) and swimming (500 yards) as its primary cardio options. However, recognizing the need for low-impact alternatives—especially for personnel with lower-body injuries, chronic joint pain, or those stationed on small vessels without tracks or pools—the Navy officially authorized the stationary bike as a third cardio option.
When in doubt, ask your Command Fitness Leader (CFL) for the latest official chart before beginning your training cycle. navy prt bike calories chart