Tripleshot Cycling

You can apparently ride across Canada on a path, (most of the way)
But now the 4,000 mile rail trail is coming soon to an exotic country near you.

Renew your passports, those of ye who are retiring soon. (Johnny T, for example)
You got some ground to cover...
https://www.railstotrails.org/greatamericanrailtrail/

Or the Trans-America Trail - another bi-coastal trip mainly off-road on a mountain-bike: https://bikepacking.com/plog/trans-amer ... l-odyssey/
Or heck- the GDMBR from Banff (though as of 2019 it's now from Jasper) to Antelope Wells, NM on the Mexican border: https://bikepacking.com/routes/great-di ... ute-gdmbr/

As Alan says, passports required.