I always eat soon before I ride, and even sometimes if I do, I get really hungry after about and hour and a half, and that is an absoultely terrible feeling. if I still dont eat after that, I'll have bonked by 2 hours into the ride. yes, I mean a real bonk, where your BO smells like windex. a full on, glycogen-depleted bonk. so, i always try to eat before, during and a little bit after I ride.