Here's my attempt from this evening: https://www.strava.com/activities/3276859219 (yes, I'm bored)- managed 1:08, 2 seconds slower than my PB from 5 years ago. This was on my Ti Burls with 48x16 on 32mm GP5000s so around 81", even bothered fixing up & fitting the lower spoke count wheels from TCR but that doesn't appear to have helped much!
Here's my attempt from this evening: https://www.strava.com/activities/3276859219 (yes, I'm bored)- managed 1:08, 2 seconds slower than my PB from 5 years ago. This was on my Ti Burls with 48x16 on 32mm GP5000s so around 81", even bothered fixing up & fitting the lower spoke count wheels from TCR but that doesn't appear to have helped much!