This is a short loop that starts and ends in Cazalla de la Sierra. The A-432 drops towards El Pedroso through holm and cork oak dehesas, the typical landscape of the Seville Sierra Morena.
From El Pedroso the A-452 climbs to Constantina, the largest town in the sierra, and the A-455 closes the triangle back to Cazalla. The route crosses the municipalities of Cazalla de la Sierra, El Pedroso and Constantina, around the Sierra Norte de Sevilla Natural Park.
It is about 54 km and an hour and a half without stops, with some 135 bends and no hairpins. Altitude ranges from about 280 m to 625 m. The roads have well-laid-out bends but narrow sections and little traffic: do not be caught out by bends that tighten.

