>>573330>>573303also depends quite a bit on the wind, its definitely worth checking the direction of it out before you head out.
around lions head theres about 20km with no forest cover surrounded in wind turbines.
the 30km/h wind going straight opposite of me made that 20km feel like 50, not to mention i was pretty sore from the 120km the day before. very demotivational going 5km/h max speed, but getting there was like arriving in paradise.