Since their website is unbearably slow to load, I’ll quote a recent Runner’s World tip that I saw.
Wait for about two hours after a meal before running. You can probably
run 90 minutes after a light, high-carb meal, while you need up to
three hours after a heavy meal that’s high in protein and fat.
Interesting advice. It reminds me of the advice about not swimming for an hour after you’ve eaten. That advice is bogus and this seems to be too. I routinely eat food minutes before I go on a joggling jaunt and I’m fine. This might not work for you but for some, don’t sweat it.
After you do a long joggle however, make sure you follow it up with a tastey treat. My choice is one of the top ten candy bars for runners and a Diet Vanilla Cherry Dr. Pepper.