Here' the other thing about this. It's not just that he claimed sub 3 marathon. He also claimed that he "doesn't run marathons anymore. I just run ten miles..." saying it as though he used to run marathons a lot, but now he's just limited to ten mile runs. (which, by the way, he makes it sound like he does routinely, which i'd be very very surprised if he actually does. )
HH: But you did run marathons at some point?
PR: Yeah, but I can’t do it anymore, because my back is just not that great.
HH: I’ve just gotta ask, what’s your personal best?
PR: Under three, high twos. I had a two hour and fifty-something.
HH: Holy smokes. All right, now you go down to Miami University.
PR: I was fast when I was younger, yeah.
Notice the plural and the confirmation. I mean, clearly this is someone lying. It's not misremembering. You don't misremember running multiple marathons when you've run one. After the serious pain I had after running one marathon, i remember swearing i'd never run another. Of course I ran many more, but that's another story. Point is, if someone asked me what my PR is after I'd run one marathon, I would've said, "Well I've only run one marathon so I guess it's a PR but it took me more than four hours." Of course, this isn't what he said. Paul Ryan was very clearly meaning to mislead here...