If anyone agrees, I'd be interested in hearing what you think those number are... I'm thinking below 70 miles daily, my nutrition will take care of itself; but at 90+ miles daily, I have to pay pretty close attention or I'll get run down after a week or two.
I think you're right. I don't know what the cut-off would be, but I'd think in terms of hours on the bike over consecutive days rather than miles.