5,384 unsupported miles across the continental USA in 3 months.

Crap, sorry.  Forgot about the unedittable first post.  Here’s a cleaner version:
A 31-year-old Ohio man, Pete Kostelnick, started July 31 at Anchor Point on Alaska’s Kenai Peninsula (where I live), running without a support vehicle to Florida – “Kenai to Key West”. Pushing supplies in a three-wheel jogging stroller, he finished this Monday, 98 days later, averaging 55 miles per day.

Anchor Point is the westernmost limit of the contiguous road system in the Americas and Key West is the southernmost point in the USA’s continental road system.

In 2016, Kostelnick ran 3,067 miles from San Francisco to New York City in 42.25 days, beating the 36-year-old record by 4 days.

In a 24-hour run, he’s done 163 miles.

https://www.sun-sentinel.com/news/florida/fl-ne-ohio-man-finishes-run-alaska-key-west-20181106-story.html</p&gt;

Adam:  The 200 miles from Anchor point to Anchorage has about 70% phone and data coverage with the longest cell shadow being 22 miles long (Manitoba Hut MP 58 to Turnagain Arm MP 80).  Then the 300 miles onto Tok, Alaska is 40% coverage with 40-70 mile gaps between towns.  Then the Alaskan Highway (which is mostly in Yukon Territory  and northern BC), I’d guess is about 40% coverage with some 100 mile gaps.  Into southern Canada and the US midwest, I expect >90% coverage.