So looking at the (under-recording) tracker, I estimate that Mr Grinder is about 100 miles into todays ride, and has probably already stopped once today for breakfast.
This leads me to a moment of clarity regarding the size of this challenge.
I reckon that Steve has covered 100 miles today in about, or just under, 6 hours.
Only once have I ever gone below 6 hours for 100 miles on one of them there Sportives and there he is, in the depths of a British Winter, doing that twice a day, every day.
Ain't no chapeau large enough.