MARS flies as a guest of the National Warplane Museum in Geneseo, NY. The field is a very large former flood plain of the Genesee River. Launches are held in a very large mowed grass area surrounded by crop lands. There are few trees and the terrain is dead flat. The National Warplane Museum airport is just west of Geneseo, NY and easily accessed from I-390, Rtes 39, 20A, 63, and 36.
The address is 3400 Big Tree Lane, Geneseo, NY 14454.