+1 to everything Von Broad said.
Since Steve revised his target to 73,000 miles I've been thinking about that distance. I don't think I've ever traveled that far in a year by any means. I work away a lot, in fact I have not worked a sane distance from home since 2004. I've had daily 80 mile round trips, obviously not even close to Steve. I've had Monday/Friday commutes to Manchester and Edinburgh, not even close. I spent a year on rotation to Qatar, still not going to touch Steve's distance traveled. My max year is probably the one in which I drove 21k miles and logged four round trips across the pond (Houston & SF) plus some shorter trips overseas. I still don't think I traveled in that year as far as Steve has ridden his bike this year.
Nor do I get close on hours worked, not even by including travel time on top of 72 hour weeks.
The sheer determination, persistence, dedication, call it what you like, is utterly alien to my mind. Chapeau Steve. Chapeau!