Line B Info
- Network Rome Metro
- Operation Started 1955
- Total Length 22.9 km
- Total Stations 22
Terminals
From
P.Mammolo
To
Laurentina
Line B Overview
Line B1 is the northern branch of Line B, splitting at Bologna station and heading towards Jonio. The first phase of this line opened in 2012 and was later extended to Jonio station in 2015, completing the entire B1 line. The line is 5.5 km long and includes additional stations. The B1 branch shares an interchange with Line B at Bologna, allowing passengers to easily use both the main line and the branch.
Rome Metro Map 2026
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Other Lines in Rome Metro
Frequently Asked Questions — Line B
Line B has 22 stations on the Rome Metro network.
Line B runs between P.Mammolo and Laurentina.
Line B is approximately 22.9 km long.
Line B opened in 1955.
Line B is a Metro line operated under Rome Metro.
Line B is part of the Rome Metro transit network.