I'm envious of those of you that must live in "normal" places. I got 3 flats in my first 100 miles on normal tires before switching to the Marathon Plus in 700x45 @ 70psi. Put on only another 250 miles before getting my first flat on the Marathon Plus. The frustrating part is I couldn't even figure out what did it, it was something that must have put a tiny micro-hole in the tube because it took until hours later to leak down enough for me to notice it was down. The canal MUP's here in Phoenix are just murder on tires I guess.