You need from 1 hour to (maybe) 2-3 hours if you climb up 4- Keep in mind that if you just want to go down from Ravello to Minori, you can then have a refreshment in the square and wait for one of the SITA buses to Amalfi or Ravello (every 30 minutes roughly).

Walking around the main historic center of Ravello is a relatively quick experience, taking only about 30 to 45 minutes to cover the primary landmarks like the Piazza Vescovado and the Duomo. However, Ravello is not a city you "walk around" just for the distance; it is a destination meant for exploration and lingering. To truly see the town, you should plan for at least 3 to 4 hours. This includes walking through the exquisite gardens of Villa Cimbrone—where the "Terrace of Infinity" offers some of the most famous views on the Amalfi Coast—and the historic Villa Rufolo, which served as the inspiration for Richard Wagner’s operas. The town is largely pedestrianized and consists of narrow, winding cobblestone alleys and steep stone staircases. If you are adventurous, you can also walk the historic stone path down to the coastal towns of Atrani or Amalfi, which takes about 45 to 60 minutes and offers spectacular views, but be warned that it involves over 1,000 steps and can be quite taxing on the knees. For most visitors, the charm of Ravello lies in the slow pace, so the "walk" is best enjoyed with frequent stops for lemon granita or a leisurely lunch overlooking the Tyrrhenian Sea.