i always finde those routes , as i dont use any maps or sat navs at all on my way , as i have a good sense of direction
i look at home on the map where i want to go, try to remember some points on the map between wich i should pass
and of i go , ok i sometimes need a couple of hours more because i`ve seen a nice country road which looks like fun with loads of corners , but i usually find a way back on the route wich i have planned , downside of this strategy is if your sat nav says 250 miles i need at least 350 miles , but i just dont care when i arrive, as long as i arrive with a big grin in my face