The S20 was introduced on 11 June 2019, with the initial termini at Zürich Hardbrücke (northwest) and Stäfa (southeast).[3] It was extended from Stäfa to Uerikon with the December 2021 timetable change.[4] With the December 2023 timetable change, the nortwestern terminus became Zürich HB and Zürich Tiefenbrunnen, respectively.[2]
Operations
S20Uerikon – Zürich HB – Hardbrücke Operates only during rush hour; stops between Männedorf and Stadelhofen only in Meilen and Küsnacht ZH.
As of the December 2023 timetable change,[update] there are four departures in the morning from Uerikon and two in the late afternoon/early evening from Zürich HB (one from Zürich Tiefenbrunnen). The service does not operate on weekends.[5] Most services are operated by SBB-CFF-FFS Re 420 locomotives pulling coaches.[6]