To some extent the question is meaningless because you would have to define where in the orbits the planets are to work out the instantaneous distance between them (Saturn could be on one side of the Sun and Uranus on the other)
It would be more meaningful to ask the distance between the orbits of the orbital paths of the planets not the planets themselves.
Neptune at the moment.However, because of it's orbit it sometimes comes between Uranus and Neptune.
Uranus is the seventh planet from the sun in our solar system, located between Saturn and Neptune.
The Solar System consists of eight planets and the sun. Between Earth and Neptune are the planets Mars, Jupiter, Saturn and Uranus. The two planets Mercury and Venus are closer to the sun than the Earth.
The planet between Saturn and Neptune is Uranus. Uranus is the seventh planet from the sun and is known for its unique sideways rotation and bluish-green color.
Uranus is around 19 AU from the sun, theres no planet that is 1.9 AU from the sun. the closest to this is Mars, at 1.5 AU.
No matter where earth and Neptune are in their orbits about the sun, Neptune will always be the furthest planet from us. The reason is that the distance between Uranus and Neptune is much greater than the distance between the earth and sun.
Neptune is in between Uranus and the former planet Pluto. :)
Neptune
Uranus and Neptune, although Pluto's orbit sometimes goes inside Neptune's orbit.
It is between Saturn and Neptune. It is the 7th planet in our solar system.
Saturn and Uranus
Uranus orbits between Saturn and Neptune as the 7th planet in our system.