250 miles? Where did you get that from?
The Nürburgring is located 90 km southwest of Cologne or. The nearest airports are Köln-Bonn (80 km) an Düsseldorf (120 km). Be sure to follow the directions to Nürburg rather than Nürnberg.
I said the Harwich/hook of holland was a shorter drive, but it's more expensive, and if we are all in convoy, then I'd rather go with the majority.
But I don;t mind how people get there, we can all meet at the hotel. :)