The very easiest way to do Ben Nevis, Scafell Pike & Snowdon is - via Google street view - just drag & drop the little man
Nice. And it has the added advantage of not waking up the inhabitants of Wasdale Head in the wee small hours or involving Wasdale MRT in yet another rescue of people who have got lost while climbing Scafell Pike in the dark and ended up in Eskdale.
I think it may have been our friends Paul and Helen over at Walkhighlands who did Ben Nevis. They've certainly done some work with Google Maps.