We've just been along the bit from Perth to Logierait

(and then turned west along NCN7 which we followed towards Weegieland, but that's another story). Back on topic

- The NCN77 was very nice indeed, for the most part!
Lots of very quiet wee roads, some pot-holed, some freshly resurfaced. There were only 2 short non-tarmac sections that I remember (lots more on the NCN7):
* a few miles N of Perth, where the traffic-free route falong the Tay turns off onto the Almond (?) towards Pitcairngreen. A short stretch was supposedly closed for work on the river banks, without any warning/diversions

. Luckily somebody had pulled the barrier aside, and we walked the bikes through as the foundations had been laid with huge boulders, but no filling in yet. [edit: just re-read Paladin's account, looks like the works are progressing]
* a few miles N of Dunkeld, along the Tay - very idyllic, and very good surface, HJ's skinny gatorskins didn't have any problems at all.
There is also a short stretch right next to the A9 (separated) that's less pleasant, but that's mainly because all the noisy & smelly cars & lorries whizzing past come as a bit of a surprise after the quiet roads.
All very well signposted, we never got lost

.
And have I mentioned it's beautiful, especially in the sunshine, with a tailwind?
T