[quote="fredrikw"]As far as I understand from friends who does quite a lot of Audax riding the pre-determined speed and the group thing with a captain is what separates it from "regular" Randonneuring. I don't think I'd have the mental strength to go on one of these longer brevets doing only 22,5km/h
(this is actually the rolling speed, between stops, and not including stops). I've done some shorter local Audax rides here, but only on about 200km.
I've heard of the 22.5kph thing as the original, 'proper', audax but I've never come across a UK audax done that way, I'd have thought that sort of thing was catered for here by CTC DA club runs and the like where you all stick in a group. Most audax riders I've met are too individual and undisciplined to ride like that. I think I'd hate it but it would no doubt do my erratic pacing some good. I believe there is another PBP run on this basis at a different time from the big one.
To me audax is usually a way of exploring the hills, back lanes and sights prettier bits of the country have to offer while exhausting myself into a useless heap which I find to be a good mood changer. Sometimes though it's good to ride a solo 200k perm from home over a lansey route you've ridden many times before. (Perm = pre-arranged ride that's not in the AUK rides calender)
UK audaxing has gone through a lot of good innovation recently with Audax UK making it much easier to design your own valid routes and get points for riding to the start of events while also toughening up on under-distance routes and other possible threats to ride integrity. You can even use gpx tracks to get a perm validated if you follow the right procedure so control points don't have to provide stamps or receipts. An influx of energetic cycling computer buffs from Yet Another Cycling Forum
has really helped things along while only putting a few noses out of place. Beards and mudguards are no longer compulsory (but still quite common).