A few comments based on my experience (Vet in 2019, Grand Vet 2022)
Training Prep:
I used a Mid Volume plan and gradually added Z2 rides on Friday and also extended other days by 20-30mins with Z2. I ended up avergaing 8-10hrs for most weeks
Once a month I did a 5-6hr sweetspot (ish) outside ride. We used these rides as a simulation for the stages to test everything, equipment, nutrition, etc.
In 2019 my upper body sruggled (average 6-7hrs day riding on stages) so in the build up to 2022 I added 2 basic upper body gym sessions per week.
Fitness wise this prepared me very well (10th in Grand Vet in 2022)
Power to weight is everything as the climbs can be long and steep so get used to contant long efforts (this is the benefit of a trainer)
Equipment / Stuff
I used a pretty much standard Canyon Exceed, I was running an eagle chainset with a 32t front chainring (some ran a 30r). I also changed the grips to ergon grips for slightly better comfort.
Use Maxis tyres as they have a support truck at the end of every stage and will quickly (and cheaply fix or replace anything)
Others
Pace yourself on the early stages, apart from the elite most of the field slows over the week. On the early stages we were 20th place +, on the last few we made the top 10, this was due to everyone else slowing more than us.
Recovery is everything. I put a recovery drink the in the drop bag they give you (which is at the end of the stage and had it imediately I finished)
Although itās a great atmosphere we didnāt hand around at the finish, we got showered and relaxed to start recovery.
I stayed in the camp, it was more convienient that the hotel service (everything is within maybe 100m of the camp, some hotels are a few km away) and a good atmosphere
However take some ear plugs / earbuds to be able to switch off from your surroundings.
Take a power bank as charging availability is hit and missā¦
Food is plentiful and varied both in camp and the food stop on the stages.
I used the Tech service for the bikes to take any potential stress away in case of bike issues.
As others have said, itās an awesome race, Iām planning to go back in 2025.
If you have any specific questions just ask 