This isn't a race.
This is a PARTY and a HOLIDAY!
Done it twice now, having beaten the train once (injured once) and took a child with me on both occassions. You've got to be fit to beat that train, but this is one event that sticks in the memory. You can keep your PBs, I've got my RTT T shirt, medal, and certificate.
(Oh yes, the beer is cheap and the food is plentiful)