My bet is he failed - either didn't start or quit in route. Nevertheless, props for trying! I rode 104 centuries in one year when I was 61 four years ago. That included 7 days in a row, four of which had temps in the low 100s. Given all that, I can assure you I couldn't have made it 168 miles in a day. Number one reason would be the saddle contact point. So I'm fairly certain he missed his goal. I'm also sure he feels better having tried than sitting on the porch listening to all of us tell him not to. The only disadvantage of failure is if the bite you take is enormous, you're totally dispirited and never return for another bite.