I need to show the shortest distance among other distances on a map for a given point.

[![enter image description here](https://i.stack.imgur.com/JMgrH.jpg)](https://i.stack.imgur.com/JMgrH.jpg)

I was thinking of a shading of colors from green to red but there are too much lines displayed (it will always be that number (~13-15 lines) ).

I will add a board to summarize these distances but I need to give a good idea indicator with the map only).

Do you think I have to put in green the shortest distance and in red the longest distance, and the others in green, or do you have another solution?