Kevin Huggins of Albany, IL, has crafted an excellent doubletrack GScale railway around his small residential lot. His back yard is a hill, yet this railway never exceeds a 3% grade as it transitions from front to back yards. Kevin has managed to cram around 1500 feet of track (2 Main Lines + Sidings) into this small area.
If you would like more information about this layout, or want to contact Kevin, he has a Facebook Group for the railroad here:
  / kevinstrains