Following on from our little chat last night where we spoke about 1.5 days to get up to Inverness. This would form the 0.5 day and is based on leaving the Premier Inn at Perth and then heading up the Old Military Road :
https://www.google.co.uk/maps/dir/PH...2d57.33041!3e0
More on the Old Military Road here :
If your in any doubt about this road, just grab the little orange google midget and drop him anywhere along the bit in the National Park