Nutrition questions...

I love to lift in the gym, been crazy about it for 6 years. I have always followed my lifting with 30 to 45 mins of running. Recently my knee's decided to tell me that I'm getting old so I bought 2019 Specialized Roubaix. Got fitted, made the upgrades and hit the road. I still lift, and I do some light cardio on the eliptical, however after work I hit the road on the bike. The problem is that the nutritional differences between lifting and cycling are completely different. I'm used to having a balanced ratio of protein, carbs, and fat and did great with it all day. However after I ride I'm crazy hungry for carbs and nothing seems to curb the cravings. Yesterday I did 30 miles. I ate an hour before, snaked on the ride, and at 30 mins after. I figured I burned 2100 calories. I tried everything yesterday, I would have eaten a football if it would have helped. So hungry, this can't be a good thing. What do you all do?