What is this distance between Neptune and the sun

about 30.1 astronomical units or 4.5 billion kilometers.

The answer is 2.793 billion miles.

Step-by-step explanation:

Neptune is the eight furthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth largest planet by diameter, the third most massive planet, and the densest gas planet. Its Radius is about 15,299 miles. Its orbital period is 165 years. Its day is 16 hours and 6 minutes long. Its surface area is 2.941 billion square miles. Its moons are Triton, Neptune XIV, Nereid, Proteus, Laomedeia, Despina, Galatea, Thalassa, Halimede, Sao, Larissa, Psamathe, Naiad, and Neso.

Although the ring is narrow at only 35 kilometers wide, it is the most famous of the five due to its 5 arcs.