I'm too old to tour every single day- and not even for the mileage you said.
When I tour, I make no real plans. Nothing specific. I just plan to ride some, and ride somewhere. If I like a place, I stay longer. If I don't, I leave quickly. Some days are harder than others, but when you have a hard day, you have to plan for a laid back day or else you're gonna crack.
I hope you go back and continue your tour. Sounds like you just need a little time off. And if you have no interest in touring there, find a new place to tour- go to Europe or Asia.
Koffee