Geoff reminds us that Chuck has bashed out a pretty awesome century a few years ago, which I had forgotten about. He did a geared 36" road century in 6h57m - 7h02m (he didn’t time the non-riding time, so it is an estimate, but still plenty faster than anyone else I know about).
My best one was 8h05m on moderately hilly roads, with ungeared 36/102mm. I did the first 100 miles of my 24 hour track record in 7h05m (ungeared, 36/90mm) but that doesn’t really compare well against rides on real roads with hills etc. - I am more interested by real ‘going for a ride’ centuries… but official records for IUF or Guinness have to be on measured tracks for good reasons.
I am mulling over having a crack at the official (IUF + Guinness) 100 mile record next year. It’ll be on a geared 36 and a nice large track. I have no idea what time to aim at yet.
Sam