Ravenous!

Are you eating your exercise calories? If not, then you have to. You work a lot more muscles when you run, so your body is probably needing extra calories to keep it going.

without looking at *what* you are eating, Id have to agree that you may not be eating enough (like others have said, eat your exercise calories).

Take a look at your fiber as well, make sure you are having some fiber (veggies) often. I would recommend every meal if you can. The fiber will help keep you full. protein will do similar.

Running is firing your metabolism into high gear. Feed it properly to keep the engine burning!

your food diary isn't public, but I'm guessing you're eating too many foods that digest quickly, thus making you hungry quicker. you should be eating lean protein throughout the day. for carbs, eat those that have a low glycemic index value as they digest slower and don't create cravings. limit processed foods. drink at least 100 ounces of water a day.

I am eating my exercise calories back. Is there a best time to eat those?

Incorporate them into meals and snacks throughout the day. Estimate your calorie burn and plan your meals and snacks accordingly.