In 1761, then-Postmaster General Benjamin Franklin ordered milestones placed along the 1673-established route from Boston, Massachusetts, to Machias, Maine, as a northern extension of the King's Highway (for that file, see here). It was established to address the need for a reliable route between New York and Boston initially, and later between Boston and points north. I've added the locations of the six milestones that are visible in Cumberland County, Maine, as specific waypoints (see below). The other waypoints are to keep the route somewhat accurate, but it will have likely largely followed the route of today's U.S. Route One, given that it passed through Kittery, Scarborough, Portland, Cumberland and Yarmouth, before continuing on up the coast.

Some accounts say that Franklin drove along the route with his version of the odometer attached to a wheel of his wagon, and that he placed a wooden marker every mile. Other wagons were said to follow shortly behind him, replacing his markers with carved stone ones, some of which survive today.

The known locations of six markers in Maine:
  • WP6 - Scarborough (see attached photo)
  • WP7 - Westbrook Street, South Portland
  • WP11 - 100 Middle Road, Cumberland (135 miles from Boston; see attached photo)
  • WP13 - Foreside Road, Falmouth (at the end of a section of road still named Kings Highway, 136 miles from Boston; see attached photo)
  • WP15 - Lafayette Street, Yarmouth
  • WP18 - Pleasant Street, Yarmouth (138 miles from Boston; see attached photo)
The flight begins at Boston's Logan International Airport (KBOS) and ends at Machias-Valley (KMVM), 250 miles to the northeast. The route is included in both .pln and .lnmpln formats. For the .pln, just load it from the World Map screen in the simulator. If you want to follow along on Little Navmap, the other file is also for you.

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