Thanks for all the good wishes, this will just be a quick one, will post a full race report later...
Ironman Western Australia is fantastic - definitely recommended, fantastic organisation and great support, the locals really take it to heart and come out in force to support and help. Plus you can rent pretty good road bikes from Perth (I rented a full carbon frame, Giant Defy Alliance with a 105 groupset).
I had a great swim, a good bike, but the run was brutal, as Little N said it was 33oC, and there wasn't a lot of shade on the run. I was the first finisher after 13 hours, in fact 13 hours 0 minutes and 22 seconds. I worked as hard as I could from about 45 minutes out to get in under 13, and managed a sprint up the finishing chute. But I'm still so chuffed to be an Ironman, especially after not completing last year.
My swim was 1hr 18mins 13 secs (the spotter planes looking for sharks was a way cool touch!) - plus there were no stingers! Beautiful swim, the best in an Ironman according to lots of people, the water's so clear you can see the bottom all the way round. Came out of the water 840 out of 1200 odd.
Bike 6hrs 20mins - For the first two 60km laps I was heading for a sub 6 hour bike ride, but the wind picked up and the heat soared towards the end (as someone put it was like being in a hairdryer). Still overtook a lot of people on bling tri bikes. Overall position 762, so I'd moved up 80 places.
Run 5hrs 21mins - Umm, it was pretty warm out there. For much of the first two laps it was a case of just surviving, I had great support from another competitor from Derby tri who runs the dive shop just down the road. I ran with him for much of the middle lap, when he knew I dropped out previously, there was no way he was going to let me do that again. Then for the final lap I ran with a French guy, we worked really well together, and overtook loads of people on the final lap, the temperature had dropped slightly so I managed to pick it up. Overall position in the run 664, final position 737.
A big thanks to Mr Bump for his enthusiasm and support, I'm not sure how long he stayed up tracking us!
Anyway off to do a bit of touristy stuff now.