A very nice secondary road, a bit narrow through villages but with good asphalt(except 800m of bad asphalt from DN75 until the county limit Alba/Cluj). Its not long(only 30 kms) but its full spectacular scenary: Piatra Secuiului(Rock of the Szeklers Massif), Cheile Valisorii(Valisoara Gorges) and in Coltesti you can visit the ruins of Trascau Stronghold(its a 1.5kms gravel/dirt road from the secondary road) and have a nice panorama of the valley.
My ex bike with Rock of the Szekely Massif
The aspahlt quality
A scenary from Trascau Mountains
Ruins of Trascau Stronghold
Piatra Secuiului seen from Trascau Stronghold
The valley seen from Trascau Stronghold
Cheile Valisorii seen from Trascau Stronghold