@Jozef-Malik-0, I all honesty, the previous comments are not going to help you... What I see is a track. You cannot change a track (at least not without completely redrawing it as a route). Assuming you will be navigating with the MRA app, what you CAN do is this:
just start the navigating the track as usual. You will be directed to the start point
long-press a point on the track, a bit ahead in the direction away from the start
Navigation will guide you to the end of the track just fine
From the end of the track, restart the track from the beginning until you are where you started
Succes!