Because it is further from the Sun than Jupiter and thus has further to travel.
The orbit of Jupiter is closer to Mars' orbit than to Saturn's orbit. Mars = 1.52AU Jupiter = 5.20AU Saturn = 9.54AU Having said that, the positions of the planets are always changing as the planets orbit the sun at different rates. Mars is the closest planet to Jupiter as of February 2011, but this is not always the case.
Both Jupiter and Saturn vary their distance from the sun as they move in their orbits. Jupiter ranges from 4.9 to 5.4 AU from the sun Saturn ranges from 9.0 to 10,1 AU from the sun. So at times Jupiter is more than halfway to saturn from the sun and at other times it is less. It would probably be best to say that the orbit of Jupiter is about halfway from the sun to the orbit of Saturn
Pluto orbits the sun, as does Saturn, but Saturn is closer to the sun than Pluto is, so Pluto has much further to go to orbit the sun. Pluto's orbit is longer than Saturn's.
No planet in the solar system has a longer orbit than Jupiter. Jupiter has the longest orbital period, taking approximately 11.9 Earth years to complete one orbit around the Sun.
All those planets which lie outside (relative to the sun) earth's orbit will take longer than earth (1 year) to orbit the sun. Mars Jupiter Saturn Uranus Neptune
I ate the Bones
The "Asteroid Belt" is the name we give to the region between the orbits of Mars and Jupiter. Saturn's orbit is about 83% larger than Jupiter's.
Jupiter orbits between Mars and Saturn's orbit.
Planets closer to the sun than Earth orbit the sun in less than one year (Mercury and Venus), while planets further out from the sun than Earth take longer than a year (Mars, Jupiter, Saturn, Uranus and Neptune). The further out you go, the longer it takes to orbit the sun.
Well, basically different planets take longer to orbit the Sun. For example, Jupiter takes longer to orbit than earth, so Jupiter has a longer year. On Venus, a day lasts longer than a year as it takes longer to spin on its axis that to orbit the sun.
Neptune, Uranus, or Saturn.
Mar, Jupiter, Saturn, Uranus and Neptune.