The S21 is a railway service of

RER Fribourg RER Fribourg or RER Fribourg , Freiburg (, ) is an S-Bahn network in the canton of Fribourg in Switzerland. The network has two hubs, Bulle and Fribourg, and began operating in . History The RER Fribourg network began operation with the 11 D ...

that provides hourly service between and , in the Swiss cantons of

Neuchâtel Neuchâtel (, ; ; ) is a list of towns in Switzerland, town, a Municipalities of Switzerland, municipality, and the capital (political), capital of the cantons of Switzerland, Swiss canton of Neuchâtel (canton), Neuchâtel on Lake Neuchâtel ...

Bern Bern (), or Berne (), ; ; ; . is the ''de facto'' Capital city, capital of Switzerland, referred to as the "federal city".; ; ; . According to the Swiss constitution, the Swiss Confederation intentionally has no "capital", but Bern has gov ...

and

Fribourg or is the capital of the Cantons of Switzerland, Swiss canton of Canton of Fribourg, Fribourg and district of Sarine (district), La Sarine. Located on both sides of the river Saane/Sarine, on the Swiss Plateau, it is a major economic, adminis ...

, respectively.

Transports publics Fribourgeois The Transports Publics Fribourgeois (TPF) is a renaming of the former Chemins de fer Fribourgeois Gruyère-Fribourg-Morat when the municipal Transport en commun de Fribourg (TF) was absorbed in 2000. Lines The company is a railway operator ...

operates the service.

Operations

The S21 runs hourly between and . It uses the western end of the Bern–Neuchâtel line and the entirety of the Fribourg–Ins line. It is paired with the S20, providing half-hourly service.

History

RER Fribourg introduced the S21 designation on 14 December 2014 for a rush-hour service between Fribourg and . In December 2017 it was changed to an hourly service on weekdays between Fribourg and Ins, paired with the S20 and together providing half-hourly service. With the December 2021 timetable change, both the S20 and S21 were extended south from Fribourg to Romont, replacing the S40. The S21 began running on weekends with this change, while the S20 operated between Fribourg and Romont on weekdays only. In December 2024, the S21 was extended from Ins to Neuchâtel to provide half-hourly between Neuchâtel and Fribourg/Freiburg, the service between Fribourg and Romont was transferred to the S40/S41 lines.

References

External links

2025 timetable
{{RER Fribourg RER Fribourg lines Transport in the canton of Bern Transport in the canton of Fribourg Transport in the canton of Neuchâtel