They are about 10.5 to 11 miles apart as the crow flies (meaning, if you were to draw an imaginary straight line between them on the map).
The distance in road miles is about 14 miles, up the New Jersey Turnpike from Newark Airport, turning right onto route 495, and through the Lincoln Tunnel into Midtown on the West Side.
11.9 miles 26 minutes
Newark, NJ is 9 miles from Manhattan
Madison Square Garden is located in midtown Manhattan, New York City. The three major airports serving NYC are LaGuardia, JFK and Newark.
Carnegie hall in Manhattan, NY is near to JFK airport (S. Queens), La Guardia Airport (N. Queens), and Newark, NJ airport. All 3 airports are about the same distance away from Manhattan.
Newark Aiport is an airport located in the United States. It is located in Newark, New Jersey, on Brewster Road. It is known more formally as Newark Liberty International Airport. The airport code for this airport is EWR.
According to Google Maps, the distance is 16.8 miles and it should take about 29 minutes to travel that distance by car.
14.7
111 miles
Google Earth cites two routes... via I-95 S, taking 36 minutes over 18 miles - OR - via I-95, taking 38 minutes over 38 miles.
330 miles
Take NJT to NY Penn if going to Midtown, if going to downtown, take NJT, transfer at Newark Penn for PATH to WTC.
115 miles