I'm still kind of newb to serious cycling and only up to 30 mile rides but I've never brought a snack and never felt like I wanted to eat on a ride. I generally ride in the morning on an empty stomach. Just a cup of black coffee before I ride and water on the ride. I was into intermittent fasting for a while so I am used to going 18 hours without any food while doing different kinds of activity (biking, hiking, swimming, weights).