If you pushed for twenty hilly miles and weren’t tired you are doing fine.
Yes I rode today. 34 miles with several small climbs that ran my tank dry. Normally I have something left for the ride home but today I was toast almost all the way home. If I didn’t have two friends to draft off of I would have taken much longer to get home.
Sometimes you have to push yourself to improve, not every ride and not every day but now and then you have to test yourself to see how much you have left and then know when to back off to 80 percent.