Audax

ednino
ednino Posts: 684
edited February 2014 in Road general
In preparation for a 24hr event I think an audax or 2 would be good training.
I've never done one but done plenty of 100mile sportives last year. Few questions...

Why are they abut £5 compared to £25 sportives?
What do they mean by 'control at' and 'information control' ?
What else is different other than them being further?

Im a noob so any help welcome on audaxing