Weight / Fat loss

A really long cycle ride and it's suggesting 4,000 calories (which I've only done once in the last fortnight). And on a sedentary day it starts to lower the amount I have left shy of 2,000 calories... and forces a smaller dinner..

I've tried eating 4000 calories and I find it really really hard, next to impossible.

Obviously I'm talking whole food with a proper mix of micro-nutrients. Its pretty fucking academic...