I think his result might be wrong. It doesn't jump out at you from his map since it's on an edge of the area, but it also has big voids on the northeast corner

I think his result might be wrong. It doesn't jump out at you from his map since it's on an edge of the area, but it also has big voids on the northeast corner of Minnesota and Michigan's Upper Peninsula. If you examine carefully, you can pick out Kinross, Gladstone, Escanaba, Marquette, Iron Mountain, Ironwood, Ashland, Duluth, Two Harbors, Hibbing, Eveleth, Virginia, and International Falls. That means the tip of Pigeon Point would put you a good 130 miles or so from the nearest U.S. McDonald's in Two Harbors, Minnesota, compared to 115 miles for the author's spot in northwestern Nevada. The northeast tip of Isle Royale would be a little farther still, if you want to count islands that are part of the lower 48. And the northeast tip of Keweenaw County wouldn't be as far from the nearest McDonald's as the crow flies, but might be the longest drive from any McDonald's, at 143 miles by road from Marquette, in a loop around Keweenaw Bay. I also found it interesting to compare the map defined by distance to nearest McDonald's with a light pollution map of the lower 48, used to find excellent dark sky locations for setting up one's telescope. McDonald's and light pollution largely overlap in tracing population density and major highways, but McDonald's is also overrepresented relative to light pollution in isolated areas that are popular vacation destinations. This jumped out as most apparent in south central Utah, and also holds for Arizona and New Mexico. The McDonald's voids are vast areas that are not only isolated, but also boring.