I biked from Buffalo to Toronto on Wednesday. It was 112 miles door to door. That's the longest I have ridden in one day by far. It took 8 hours and 40 minutes of actual riding and 11.5 hours overall (I spent an hour swimming in the lake). I rode back yesterday (Friday), taking a partially different route that was 105 miles in 8 hours, 11 overall. I found that the first third of each ride was the worst, both physically and psychologically, after that you get into a rhythm that feels normal. Unfortunately because I was spending a whole day in Toronto (I had a friend's art opening to go to), I had to bring a lot of stuff, heavy lock and cable, another pair of shoes, a change of clothes, a small messenger bag, etc. It would have been nice to travel a little lighter.