What are the most popular routes to Treto?
| Laredo - Treto | Average priceR 102 | Average duration10m | Daily departures12 | |
| Santander - Treto | Average priceR 207 | Average duration1h 45m | Daily departures12 | |
| Colindres - Treto | Average priceR 104 | Average duration5m | Daily departures11 | |
| Berria - Treto | Average priceR 102 | Average duration18m | Daily departures9 | |
| Castro Urdiales - Treto | Average priceR 132 | Average duration45m | Daily departures8 | |
