When they had passed through Amphipolis and Apollonia... Acts 17:1
City: Both cities were located on the Egnatian Way (Via Egnatia), a major route running east-west across
present-day northern Greece. Each was about a day's journey from the next (30 miles). The road is still
visible today at several locations in Philippi and Apollonia. (NIV Study Bible:1678)
"[Amphipolis], which lies in a fertile river valley, was noted for its wine, oil, and wood. During the Roman
period the city commanded a strategic position along the Via Egnatia, the bridge across the Strymon River."
Summary: Paul and Silas passed through each of these cities on their way from Philippi to Thessalonica.