To get physically prepared for spending a whole day out on your bike, there's no special preparation needed, you just need to ride regularly. To manage your first 200 km-ride, do a few 100 km-rides. Your body and cardio should be capable of managing a whole day without any issues, if you are used to regular cycling.
For longer distances, or outings of several days, it's not rocket science! You need to cycle lots prior to the big departure, to prepare your body to withstand so many kilometres.
On long distances, you come across a wide variety of terrains, whether it's flat or hilly, uphill or downhill, etc.
Train on relatively flat ground where you can ride at a regular pace to work on your endurance and cardio.
You know your weakness, so go out and face it! If you don't feel comfortable on slopes, practise riding on hilly tracks with a high gradient. It will be tough, but it'll help you progress.
Another tip is to train with your bike loaded as it would be for a long distance ride (with bags full and mounted), which will allow you to test your equipment in real-life conditions, detect any potential problems and sort them out before the big day.
In brief, the more you ride, the more progress you make and the easier it is to cover long distances.
And so it's important to ride regularly, at a stable pace, so you don't lose the benefit of each outing.
The night before you're due to set off is important in the preparation of your long distance ride. Not surprisingly, our advice is to have a quiet evening and go to bed early to be in good form in the morning. Avoid an alcohol-fuelled evening, for example.
For your meal the night before you set out, it's best to go for carbs, but the most important thing is not to modify your regular eating habits in the 24 hours before the ride. Your organism and metabolism could play tricks on you while out cycling and that can make things difficult for you.
For breakfast on the big day, don't eat too much: a bowl of cereal, a banana, some fried eggs etc. Ideally, allow one to two hours for your body to digest your meal before you set out.
After your ride, drink plenty of water, eat, and refresh your legs with a cool shower. Cold water stimulates blood circulation and helps you to recuperate.
If you follow all our advice, the odds will be stacked in your favour so that your ride goes smoothly.