May as well say Spokane....lol
NOW you've done it! Google, here I come...
2,869 miles by car from NYC to San Ysidro, CA (which is on the US/Mexican border). Haven't found anyplace further in contiguous US. But Circle, MN is the furthest place from a Starbuck's in the contiguous US. Huh. Montana can't be all bad, then...