MTC - Where to go?

This is my map for the MTC May 2017
You can either go on a dirt route, or on a tarmac route, or first dirt then tarmac, or first tarmac and then dirt or the cut experts among you probably will find a completely different cross country route

AT 0:47:848

Good luck and have fun finding the fastest way (to be honest i am not sure myself, which one is the fastest )
JR

PS: calculating the high shadows messed up the flat dirt blocks a little, they are darker than the rest of the dirt, adds an interesting look, but was not planned like that.