With a full battery charge the "Tour" range on my XM700+ shows 37 miles and I believe that computation is based on last couple of miles ridden which was a combination of some flat and some small climbs. So it would appear that my range may be slightly more than 40 miles with flat and climbs. Anyone else want to chime in on their range?
I've had my Trek 700+ for 10 months and have just over 2,000 miles on it. I keep the assist in the lowest level 95% of the time. Riding in Western Oregon, I usually have a few hills. My typical rides are 30-40 miles, but I've done some that were in the 60-70 mile range. Anytime I do more than 50 miles I worry a bit, but so far I've not used up the charge.