| S20 | |
| Operator: | Treni Regionali Ticino Lombardia |
| Distance: | 24.6km (15.3miles) |
| Journeytime: | 33 minutes |
| Frequency: | 30 minutes |
| Map State: | collapsed |
The S20 is a railway service that runs every half-hour between and in the Swiss canton of Ticino. Treni Regionali Ticino Lombardia (TILO), a joint venture of Swiss Federal Railways and Trenord, operates the service.
The S20 runs every 30 minutes between and, using the Gotthard line from Castione-Arbedo to and then the Giubiasco–Locarno line to Locarno.[1]