There have been several probes sent from Earth to Jupiter as of 2014, and it took them between three and five years to get to Jupiter. It would take 850 years traveling 65 miles per hour to reach Jupiter from Earth. The orbital period of Ganymede around Jupiter is 7.154 Earth days, or about one Earth week. How long does it take Ganymede to go around Jupiter? Asked in Planetary Science But if you actually want to slow down and go into orbit around Jupiter, you’ll need to take a much slower journey. A few of the missions sent to Jupiter include Cassini, Voyager I and II, Ulysses, and Pioneer 11. It would take 187.165618 days to go all the way around Jupiter.