Most recent run:
Deadhead from a town in Maine, west on U.S. 2 to a town in Vermont to pick up. Drive loaded to a town in Upstate New York to deliver. (A delightful New England summer drive, I might add.)
Miles on offer: 405
Miles on FedEx-recommended route as calculated by Delorme: 395.
Miles on FedEx-recommended route as calculated by CoPilot Truck: 409
Odometer miles: 415
Off route includes a fuel stop, driving in and around facilities at shipper and consignee, and driving past the gate by mistake at the shipper and having to go a ways before we could make a U-turn and go back. Odometer may be off a bit due to tire wear. Have not checked it in a while.
This run took us through Maine, New Hampshire, Vermont and into New York mostly on back roads with lots of hills and curves. We are on an 1,844 mile (per offer) run now, mostly freeway. I'll check the numbers for that run after delivery.
Our conclusion so far is the same as before; offered miles are close enough to actual miles to not worry about the difference.