Originally Posted by
WhyFi
Are you trying to eat/drink while hammering or something? At an endurance pace, eating/drinking shouldn't be a challenge. Slow down for a bit.
At anything short of red-line you should be able to grab a drink from a bottle. Eating generally requires backing off some.
If you look at pro riders, the feed zone is usually relatively early on a flat portion of the stage. That way the riders can ease off to refuel before going full gas.