Perth - Killin
following NCN77 from Perth to Logierait, and then NCN7 to Killin
mostly very quiet country lanes, some short unpaved stretches (hard packed) just north of Perth and just north of Dunkeld
the most strenuous bit was the rollercoaster between Kenmore and Killin, with some very steep (and some very gradual) uphills interspersed with sweeping downhills.
Great views all along!