Turn around on Rolla World Route

I would love to be able to turn around when cycling in Rolla World

This would allow me to do hill repeats without having to do a full lap to get back to a hill.

I would ride up a hill to see how far I could get in ( say) 4 minutes, then turn around and cool down on the descent until I got to my original starting point for the hill. Then Turn around again to re climb the hill 🙂