mapmyrun is indeed one of my preferred tools as well (if I'm planning a route in advance). The only thing is though, you have to bare in mind that the "satellite photo's" are photo's taken from a plane/helicopter, not a satellite and so when you're trying to be incredibly accurate (like measuring metres), it
can be a little innaccurate - mind you it's usually it's spot on!
I assume everyone is aware of the ability to look at plan view (birds eye view) photo's in addition to the normal map layout - and if you didn't, you do now!
