Ended my ultra, does everyone else feel awful at the end?

Did a 3 day ultra and I ended barely being able to walk, my hands are completely numb, my knees feel awful, my Achilles hurts, my back is rough. I walked around like a zombie afterward and I could barely unbuckle my helmet strap because my hands were so numb.

Do you guys all end your events kind of feeling awful, or does this just sound like a bad bike fit?