Line B
Laurentina ↔ Rebibbia — Laurentina ↔ Rebibbia. 22 stations.
Line B in Detail
Line B is part of the Rome Metro, operated by ATAC. It runs from Laurentina to Rebibbia, serves 22 stations, and crosses the center of Rome, connecting the suburbs to the city’s main hubs. You can transfer to another line at the main transfer stations: Termini (A/B), San Giovanni (A/C), Colosseo (B/C), and Bologna (B/B1).
The stations on the line
Timetable and frequency of the Line B
| Direction | First train | Last train | Trains/day |
|---|---|---|---|
| Monday–Thursday | |||
| Laurentina | 5:30 AM | 11:30 PM | 121 |
| Rebibbia | 5:30 AM | 11:30 PM | 121 |
| Friday | |||
| Laurentina | 5:30 AM | 1:27 AM | 134 |
| Rebibbia | 5:30 AM | 1:27 AM | 134 |
| Saturday | |||
| Laurentina | 5:30 AM | 1:27 AM | 134 |
| Rebibbia | 5:30 AM | 1:27 AM | 134 |
| Sunday | |||
| Laurentina | 5:30 AM | 11:30 PM | 121 |
| Rebibbia | 5:30 AM | 11:30 PM | 121 |
On the shared section between Laurentina and Bologna the B and the B1 alternate: on the platform a train comes every 2–7 minutes, twice the frequency of either line on its own.
Figures taken from Atac's official GTFS (August 2026 edition), measured on a real day of each type. The ranges are the 10th–90th percentile band of the gaps, not the best-case headline figure.
Line B, which opened on February 9, 1955, was Italy’s first subway line. It connects Laurentina and the EUR district to the historic center (Colosseo, Circo Massimo, Termini) and continues on to Rebibbia, with the B1 branch line heading toward Jonio.
Frequently Asked Questions
Line B is one of the lines of the Rome Metro, operated by ATAC. It runs from Laurentina to Rebibbia and serves 22 stations.
The entire trip from Laurentina to Rebibbia takes about 32 minutes, depending on the time of day, stops, and layover times.
The first trains leave the terminals around 5:30 AM. The last one leaves about 11:30 PM Sunday to Thursday and 1:27 AM on Friday and Saturday. The frequency stays at 9 min all day. When the metro closes the nMB night bus takes over.
The metro transfer stations are Termini (Lines A/B), San Giovanni (A/C), Colosseo (B/C), and Bologna (B/B1). At many stations, you’ll also find connections to buses, trams, and regional trains.