Originally Posted by DrIsotope

I've missed the solo 5-hour-century three times-- my closest was averaging 3m1s per mile, so I missed it by less than 2 minutes. Not quite fast enough.

I don't obsess much over downhill speed, as that's just a combo of willingness and luck. I've averaged 35mph for half an hour before. Thanks, gravity! Aside from once having a 100%-not-awesome speed wobble @ 45mph due to an over-tightened headset, I've not really had much drama descending (knock wood.).

My "best day out there," for avg. speed that is, came at the close of the Rapha Festive in 2018-- I let +20mph winds from the north push me from the IE all the way to the Pacific Ocean, covering 75 miles in 3h10m, averaging 23.7mph. I set something like 140 PRs that day, and most of them are untouched still.