Albert Barnes Commentary Acts 16:11

"Setting sail therefore from Troas, we made a straight course to Samothrace, and the day following to Neapolis;" — Acts 16:11 (ASV)

Loosing from Troas. Setting sail from this place.

To Samothracia. This was an island in the Aegean Sea, not far from Thrace. It was peopled by inhabitants from Samos and from Thrace, and hence called Samothracia. It was about twenty miles in circumference; and was an asylum for fugitives and criminals.

And the next day to Neapolis. This was a maritime city of Macedonia, near the borders of Thrace. It is now called Napoli.