Are we all too lazy to copy @Eshnar's excellent stage analysis posts into a new thread these days? 
From that thread:
Thursday, May 11th, 12:55 – 17:10 CEST
Technical Overview:
From Napoli to Napoli again, just like last year… the route is very different though. The peloton will go east this time, riding along the side of the Vesuvius, pass by Pompeii and then get to the first intermediate sprint in Sant’Antonio Abate, at which point they will start climbing. Valico di Chiunzi (GPM2, 8.3 km at 6.3%) is a good climb to form a strong breakaway, on a stage that is very favourable for it. It is followed by another ramp just after the top, Colle San Pietro, with around 3 km at just over 5%. Then, an 11 km long descent will bring everyone onto the most appealing part of this stage, the stunning views of the Costiera Amalfitana, starting from the town of Amalfi itself. This ragged coast will last up until the second and last climb of the day, the easy Picco Sant’Angelo (GPM3, 7.6 km at 3.8%). Its descent brings to the town of Sorrento, the second intermediate sprint. From here on it is smooth sailing, as the remaining roads are all flat along the coast, with only the small ramp before Castellammare di Stabia left, roughly 2.5 km at 5%. The last 35 km are pan flat, with only some minor bumps, including one at 2 km to go that should not pose any real problems for the sprint.
The Climbs:
Valico di Chiunzi: GPM2, 8.3 km at 6.3%
A solid and very regular climb, that comes with an official profile, including the bonus ramp of Colle San Pietro after it.
Picco Sant’Angelo: GPM3, 7.6 km at 3.8%
A lot easier than the previous climb. Only the last km is quite steep, at 7-8%. (added a profile)
What to Expect:
The breakaway has a huge opportunity, the terrain will not help the peloton until the final 55 km, so I doubt they will bother chasing. The battle for and within the breakaway, as well as the views, will provide most of the enjoyment of this stage.
Positano, Costiera Amalfitana
From that thread:
Thursday, May 11th, 12:55 – 17:10 CEST


Technical Overview:
From Napoli to Napoli again, just like last year… the route is very different though. The peloton will go east this time, riding along the side of the Vesuvius, pass by Pompeii and then get to the first intermediate sprint in Sant’Antonio Abate, at which point they will start climbing. Valico di Chiunzi (GPM2, 8.3 km at 6.3%) is a good climb to form a strong breakaway, on a stage that is very favourable for it. It is followed by another ramp just after the top, Colle San Pietro, with around 3 km at just over 5%. Then, an 11 km long descent will bring everyone onto the most appealing part of this stage, the stunning views of the Costiera Amalfitana, starting from the town of Amalfi itself. This ragged coast will last up until the second and last climb of the day, the easy Picco Sant’Angelo (GPM3, 7.6 km at 3.8%). Its descent brings to the town of Sorrento, the second intermediate sprint. From here on it is smooth sailing, as the remaining roads are all flat along the coast, with only the small ramp before Castellammare di Stabia left, roughly 2.5 km at 5%. The last 35 km are pan flat, with only some minor bumps, including one at 2 km to go that should not pose any real problems for the sprint.

The Climbs:
Valico di Chiunzi: GPM2, 8.3 km at 6.3%
A solid and very regular climb, that comes with an official profile, including the bonus ramp of Colle San Pietro after it.

Picco Sant’Angelo: GPM3, 7.6 km at 3.8%
A lot easier than the previous climb. Only the last km is quite steep, at 7-8%. (added a profile)

What to Expect:
The breakaway has a huge opportunity, the terrain will not help the peloton until the final 55 km, so I doubt they will bother chasing. The battle for and within the breakaway, as well as the views, will provide most of the enjoyment of this stage.

Positano, Costiera Amalfitana