Ok folks, here are all the details. The route is 38.0 miles in total, with the cafe stop at 23.1 miles and with 1,347 ft of climbing.
You can see the route at https://ridewithgps.com/routes/27509449 where you can download it as a GPX file. Or if you have a bike computer without full navigation then you’d probably be better off with the TCX file with custom cue sheet at https://www.dropbox.com/s/87thyob6t1d15da/Wellington_0518.tcx?dl=0
See you at the bridge!