Well I gingerly sit here writing this having gotten home a few hours ago from completing the race.

Total laps: 20. Total distance: 192.4km, elevation: 3697m.

I got to say I'm pretty happy with my result, pacing and nutrition strategy - bar one thing which was out of my control. Details below

0:42:03
0:40:55
0:42:36
0:42:54
0:42:16
0:48:10
changed my kit
0:50:38
0:44:56
0:45:23
0:48:38
0:48:33
changed my kit + added lights to the bike - start of night laps
1:13:19
0:50:28
0:48:50
0:53:34
change my kit - had a big meal
1:23:50
* had to call it a night and sleep (2am)
9:07:00 - first morning lap was actually a 0:37:20, but the 9 hours was started at the end of the previous lap. Yes I was stationary for 8:30..Some of this was medical time, some changing clothes, some eating.. only 5 hours sleeping.
0:34:07
0:34:12
0:35:22

Notes from the race:

The limiting factor - the * that caused me to call it a night. My left hand. It went completely numb. Lost all feeling and strength in it. Could barely grip the handlebar. It went all inflamed and I couldnt even see any tendons across the back, and I didnt really have any knuckles when I held my fingers out straight.... You can imagine at 2am tearing down a rocky section and your hand gives up... Not ideal. Frustrating really, because even now - my legs feel great. This can be evidenced by the last 4 laps that I did this morning... had so much left in the tank. The decision made at 2am was to preserve myself. The decision made at 9am to ride again was made as I was stupid and feeling energetic.

I'll have to go check out new gloves or grips or something because I feel like I could have ridden the entire night if it wasnt for my hand. I guess the vibrations from the rough surface would have caused this.

Food: Built roughly around consecutive laps having banana (and whatever I wanted out of salty chips (crisps), mint chocolate, or "Chocolate, banana and coffee brownie") and the next lap a baked potato with bacon and cheese (plus whatever) - giving me a good combination of fast and slow energy, plus fats and salt.
Hydration: Carried a fresh 650ml drink bottle each lap and ensure I finished it - 20% apple juice, 80% water + salt. Had two cokes.. one at 10pm and one at midnight.

I didnt run out of energy once, didnt get any cramp - just felt realllly full about 6pm. Like major food baby. Cut the food back for the next lap and was ok after that.

Changing gear: Every 4 hours was too late. Really needed to be every 3. The chafe only set in during the last hour of every 4 hour period. Paying for it now.
Changing lights: never forget to change your battery if you arent sure. Made that mistake once and handlebar light turned off mid lap... was a little risky on that one.
Blisters: my palms got rubbed raw... i ended up strapping them, around my thumbs and across the palm - with rock tape. Seemed to hold it off for the most part, still got one really tender spot.

Ended up 7th from 23 in my category (150 teams across the event)

Prior to starting a "proper" tri training program 7 weeks ago, I would be on the MTB up to 6 times a week - sometimes for an hour, usually up to 3. Combination of technical stuff and fire trails/4WD tracks.
Proper training would be 3 swims (one pool two ocean), 3 runs (1 long) and 4 rides (one recovery for an hour, 1 turbo power session, 1 big gear or race pace, 1 long ride 3.5-4 hours).
I did a few longer rides prior to the race, but the longest of those was only 6 hours - so nothing really like the proper preparation I'd need although even today sitting at work, the legs arent really that sore - tired, but not really achey. My back is pretty stiff, the chafe hurts... but my hands still arent working very well. Bit of a struggle to type.
I guess longer rides would have given me an indication of the hand thing - could have worked out some way to deal with it. Next time.

MTB "training" was more me enjoying it and going for casual rides with mates, i wouldnt call it training - no structure or anything, just a lot of zone 1-2 stuff. And those rides would have been only done on a good week.. some weeks would be 1 ride of an hour max.

Tri training was started because I had sufficiently recovered from an ITB issue and could run again - was waiting for this to heal so I could train properly for IM. The 24 hour race was just for funsies... call it a D race. Wasnt any specific training done for it apart from making my long rides on the MTB and making them a little longer than the usual 3.5-4 hours.

(Also JOOSC... Just out of s.... curiosity?)