There’s one 30 mile (48.203 Km) ride shown, at 1:02.59 which is not under an hour, the 30 milers are all around 55 minutes mark, this is someone who has specifically trained for time trials and is a seriously fast amateur, the majority of TT’s shown are around Cambridgeshire which is notoriously flat, I would also suggest that his times would be a lot worse around the hills of West Yorkshire,