What are the most popular routes to Treto?
| Santander - Treto | Average priceR 196 | Average duration1h 40m | Daily departures12 | |
| Colindres - Treto | Average priceR 98 | Average duration5m | Daily departures11 | |
| Berria - Treto | Average priceR 95 | Average duration18m | Daily departures9 | |
| Castro Urdiales - Treto | Average priceR 124 | Average duration45m | Daily departures7 | |
| Islares - Treto | Average priceR 134 | Average duration1h 41m | Daily departures6 | |
