Your “three time zones in 30 hours” reminded me of a return trip from CA. I had planned to stop in Amarillo but all the hotels/motels were full of oil field workers (fracking had just begun). No vacancies until I reached Oklahoma City but by then I decided why stop now. Drove 998 solo miles that day from Kingman, AZ, to Joplin, MO.
A few years ago I moved from Michigan to Maryland. For about 15 years before that I was a volunteer bus driver to run kids from Detroit to a Christian camp in the Upper Peninsula, about 465 miles north. I continued to make at least one trip a year after I left.
Thursday-600 miles from MD to MI.
Saturday at midnight- Drive bus to UP and back (multiple drivers) 1000 miles
Return Saturday night, jump in car and drive 600 miles home.
2200 miles, 32 hours seat time.
My longest single "day" on the road was 20 hours -- 1,170 miles from Medicine Hat, Alberta to La Crosse, Wisconsin. Long drive, and a long story behind it. LOL.