What is the world's oldest proper airport runway?

Question

Also, I'd like to know what the oldest paved runway was.

Answer 1

The first runways were grassy fields in which pilots could land in any direction that had a favourable headwind. This was later upgraded to dirt fields to reduce drag from the grass, but these fields would become muddy during the rain.

One of the oldest continously operating airport in the world is College Park Airport.