Regal Princess’ fitness center is located on Deck 17. The space is long and narrow, with cardio equipment, including treadmills, ellipticals, stationary bikes, rowers and spin bikes. It also has a solid selection of weight machines, as well as a cable machine, Smith machine with plates and free weights up to 100 pounds. Even during busy times, the flow is well managed, and wait times for equipment are short. The fitness center also has a large aerobics space, used for spinning, Pilates, boot camp and TRX suspension training classes; most classes require a fee. Beware: Many of the popular classes like TRX and bootcamp require you to sign up for multiple classes, which might not all be at times that suit your schedule. A two-lane jogging track is located on Deck 18, and the line designates one lane for walkers and the other for runners. We found passengers generally adhered to those rules. Seven laps around equal one mile. Various pieces of resistance equipment, which work using body weight, are located in clusters around the track.