With mapping technologies planning a bikepacking route is easier than you think.
The best way to start is with a mental picture of what you might like as a bikepacking route. Maybe you already know of the perfect area, some place that you have visited before.
The easiest is to plan your route along roads that are open to anyone. This way you can share your route for everyone to enjoy.
Now all you have to do is plot your route on your favourite mapping software or by using Google Maps. It is always best to use Satellite view when plotting a route. Once completed save your route to your bike computer. Now all that is left is to go and ride the route with friends.
As I have experienced it is best to keep an open mind and plan for the unexpected. A river bridge that has been washed away. Roads with gates and roads that have not been used for a long time. These are the "Adventure" elements!
After you have completed the entire route share it with everyone to enjoy.