This distance, 3226.58 miles, is roughly the same distance as from Frontera Comalapa, Chiapas, Mexico to Boston, which Google Maps tells me I can walk in 43 days, 19 hours via the Natchez Trace Parkway.
The moral of the story is if you want something from England, it would be faster to fly over there yourself and buy it... I hope to have a review of this much anticipated book in February...