When I go on significant rides (25-50 hilly miles), I've been trying to refuel based on a formula of 25-30 calories per mile. I ride a touring bike, so I'm not that fast. Thing is, riding 25 miles doesn't wear me out nearly as much as it did when I started cycling last year. At first I was hungry all the time and eating all the time and I still lost weight. These days, though, cycling doesn't seem to make me much hungrier until I get past 40 miles, and 25 miles barely tires me out at all. Wondering if I should still be refueling at the same rate?