Hier ist ein lustiges Spiel, was sich auch gut für Server eignet.
(The cover picture that I wanted to upload was too big!)
First, you find a river that seems long enough to you. Then you build your start line and your finish line by building (any height) two “towers” of fences at the same height, which you then connect with black and white wool.
You put some boats underneath.
Now you can, if you want, add some more obstacles to the course of the river. His very creative…
Here is an example:
Now the race can start!