The distance between Earth and Uranus changes constantly, due to the solar system not being entirely concentric. However, the closest Earth and Uranus get is 1.6 billion miles, which is 2.6 billion kilometers. At furthest, the distance is 1.9 billion miles, or 3.2 billion kilometers.
Uranus also lies extremely far from the Sun, getting within 1.7 billion miles (2.6 billion kilometers) at its closest, and 1.8 billion miles (3 billion kilometers) at its furthest point. Being so far from the Sun, Uranus is extremely cold, reaching temperatures as low as negative 371 degrees Fahrenheit, which is negative 224 degrees Celsius.