The fburg field is sort of a weird spot for GPS. Many times folks get sent to the renter's house that's on the far upper right corner in sat view. Montee runs the website and I run the code behind it. I'm thinking of swapping from a street addy to coords. GPS systems generally accurately plot to those.
GPS also tries to take folks down rt 1 partways >.>
Essentially for time/ease you take 95 to exit 118 for Thornburg. From 95, take Mudd Tavern west to the intersection 300ft from the overpass. Then take a right onto rt.1 north. From the intersection the fburg field is about 500~1000ft on the left at the top of the hill, or really, it's the first opening/farm you'll see.
Beware blowing the stopsign at the overpass. The local sheriff is a Barney Fife and gets a mound of tickets over it.
The nice thing about fburg like you pointed out is how close it is to amenities. Foodlion/ABC store are 2min driving south rt.1. Nice places for dinner are about 10m north on rt.1 (Friday nights we bumrush Red Robin as an event ground).
The addy does give the right field. You'll note all the ATV trails we have everywhere >.>
The long strip through a field below the main field is for drag racing....stuff. Helis....semis...etc
38°08'36.5"N 77°31'39.3"W is the exact location.