Route number is A3136. Remember it—the number stays the same everywhere: on the stop display, in apps, on the vehicle itself. Look for A3136 specifically. If you're not sure you found the right stop, just ask someone nearby: 'Does bus A3136 stop here?'

This route serves the Barakaldo (Spain) region. In larger metro areas, routes can pass through several districts or towns. To know for sure if it works for you, pull up the route map and check the key stops and direction.

Starting point is Santurtzi. Usually at the first stop there's a turnaround or layover space where drivers rest between runs. If you want to guarantee a seat, get on here—the vehicle is just starting out and still mostly empty.

Final stop is Bilbao. Everyone gets off here, the vehicle turns around and heads back after a few minutes. Missed your stop? No big deal—just ride to the end and come back on the same route.

This route is part of the 'Bizkaibus' transit system. Within one network, payment and transfer rules are often consistent. Terms can differ though, so check current fares and payment methods in up-to-date sources before your trip.

No. Circular routes run in a closed loop, regular routes go between two endpoints. To avoid going the wrong way, check the destination on the display and confirm direction using a map or stop list.