Amtrak National Parks trips
https://www.amtrakvacations.com/destinations/national-parks
VIA Canada to remote fish camps (to hang out or hike)
https://www.algomacountry.com/fish-hunt/train-in-fishing/
Voyageur Trail
https://www.voyageurtrail.ca/
Alaska Railroad
https://www.alaskarailroad.com/travel-planning/day-trips
Alaska Railroad Winter Trips
https://www.alaskarailroad.com/travel-planning/winter
North Carolina Wilderness Gateway State Trail
https://trails.nc.gov/state-trails/wilderness-gateway-state-trail
Verde Canyon Wilderness Route
https://www.thetravelinglocavores.com/verde-canyon-railroad-wilderness-route/
Alaska Spencer Glacier Whistle Stop
https://www.alaskarailroad.com/travel-planning/destinations/spencer-glacier-whistle-stop