| Bilbao to Opole | 1,103.49 mi (1,775.90 km) |
| Bilbao to Orzesze | 1,126.59 mi (1,813.07 km) |
| Bilbao to Osowa | 1,233.33 mi (1,984.85 km) |
| Bilbao to Ostroda | 1,263.69 mi (2,033.71 km) |
| Bilbao to Ostroleka | 1,306.82 mi (2,103.13 km) |
| Bilbao to Ostrow Mazowiecka | 1,313.27 mi (2,113.51 km) |
| Bilbao to Ostrow Wielkopolski | 1,123.36 mi (1,807.87 km) |
| Bilbao to Ostrowiec Swietokrzyski | 1,253.39 mi (2,017.13 km) |
| Bilbao to Ostrzeszow | 1,121.86 mi (1,805.47 km) |
| Bilbao to Oswiecim | 1,144.51 mi (1,841.90 km) |
| Bilbao to Otwock | 1,272.29 mi (2,047.55 km) |
| Bilbao to Ozarow Mazowiecki | 1,255.98 mi (2,021.30 km) |
| Bilbao to Ozimek | 1,115.20 mi (1,794.74 km) |
| Bilbao to Ozorkow | 1,189.66 mi (1,914.57 km) |
| Bilbao to Pabianice | 1,185.79 mi (1,908.35 km) |
