The usual selection of tools including allen keys, tire levers, two spare inners, puncture repair kit and a decent pump.
A water bottle in a cage on the bike.
Your wallet with some money in it and a credit card.
Your mobile phone.
Somewhere safe to store your control card.
That's the real essentials. I'd also advice carrying a small amount of food without to get you to the next town/control.
A thin waterproof jacket would be worthwhile having if there's any chance of rain, shoe covers if there's a risk of a downpour.
You will want the following;
The usual selection of tools including allen keys, tire levers, two spare inners, puncture repair kit and a decent pump.
A water bottle in a cage on the bike.
Your wallet with some money in it and a credit card.
Your mobile phone.
Somewhere safe to store your control card.
That's the real essentials. I'd also advice carrying a small amount of food without to get you to the next town/control.
A thin waterproof jacket would be worthwhile having if there's any chance of rain, shoe covers if there's a risk of a downpour.