Your post has messed with my subconscious. Last night I had a dream in which I'd managed to clock up 850 miles in a day and then decided I might as well carry on to 1,000...
Still in awe of the riders doing this, particularly when I feel knackered after a full 80 mile week of commutes.
Only 790mi? That's totally doable, he just needs to pedal faster and stop sleeping.