Last summer, wife and I, did 78 miles in two days on our Electra Townies, 21D. The first day, we enjoyed the ride so much, that we didn't realize we had gone 20 miles ONE way. Then we realized we had a 20 mile return. The second day we did it again, except 2 miles shorter. Not bad for a couple in their 60's...And ONE of us (that would be me) weighs in at 250lbs.