Key Aspects: Scottish trail runner Paul Manson ran 7 marathons during a 7-night cruise aboard Enchanted Princess in August 2026. He completed the first marathon in Rome the day he boarded the cruise ship and did additional marathon distances at every port. One day was a marathon onboard the ship at sea with 185 laps on the jogging track on Deck 18. Many cruise ships are equipped with fitness facilities and onboard jogging tracks, but it can be a joke that many cruisers add up more miles just walking around the ship than they ever would using the fitness equipment. Adding up...