It is not as simple as that. Looking at my log book I have around 300 hours of flying across Wales VFR.
Most were direct line Cardiff to Valley. None were ever flown direct line.
The weather and terrain is the killer for experieneced low level pilots.
The combination of very poor visibility and turbulance is not an easy combination to cope with if you have never flown over remote mountains.
Try it at night and you really push your luck.
Been there done it and never again.