Eat while riding?

[KnottedYet]

Generally every half hour or so. But everyone is different. Since you already know you hit the wall around 20 miles, maybe try eating every 10 miles? (eat before you bonk, much better than eating as you bonk or after you bonk)

Edit to add: generally *I* eat every half hour or so. I didn't mean to imply that everyone eats every half hour or so.