Hard Ride That Shouldn't Have Been

I sit here thrashed. Blown. Recovering. This, from a just shy of 2 hour road ride, 30 miles, 2000' of climbing. A route I've done many times. It was chilly, but I was dressed ok for it. Weather otherwise good. Bike in good order. Roads basically dry. Hadn't ridden for four days. Stomach/food situation, not so good I think. I hadn't realized that I left quite so "late" (11am). I hadn't eaten since breakfast, which was almost nil on protein to boot (which usually means it doesn't last me very well). I sucked a Clif Mojo bar down about 45 minutes in, and that helped. But, I probably should've had more in me I think. Kept a solid pace throughout the ride, especially after I realized how late I left and that I wasn't going to be even close to being home around noon-ish to have lunch with my wife and son. Regardless, it was a good ride, just feeling way more knackered than I would have expected. Of course, I tend to revel in that as well, so other than feeling a bit lazy at the moment, all in all, things are good.