+1. 30-35 miles a day was norm. I am starting to increase this to 45 miles one way occasionally now. Definitely good way to get nice base mile/endurance phase on. Only thing is, have to be careful not to over do it with extra burden on my body this way. As for chicken and egg... I think it should be fine. I am on diet that is basically reduced carb (basically reduction in processed carb or high GI carb intake) and have absolutely no issues with that 45 miles ride. Might extend that 45 miles to 70 miles on occasions when I really feel like it and work schedule is easy.