It is 25.4 miles taking this route:
35 miles
28 miles taking I-66 WEST to DULLES AIRPORT access road (ROUTE 267), then ROUTE 267 WEST to Ashburn.
314 miles
The address of the Middleburg Museum Foundation is: Po Box 185, Middleburg, VA 20118-0185
It is 1.058 miles according to Google Maps.
The address of the National Sporting Library is: , Middleburg, VA 20117-2664
The address of the Mcghee Foundation is: Po Box 1829, Middleburg, VA 20118-1829
Ashburn, VA
Plan on a solid 30+ hours of driving. The distance is 1,954 miles if you take I-40 West.
The address of the Unison Preservation Society is: 21028 Unison Rd, Middleburg, VA 20118-0606
The address of the Atoka Preservation Society is: Po Box 90, Middleburg, VA 20118-0090
The address of the National Arboretum is: 20558 Wildbrook Court, Ashburn, VA 20147