| Arcos de Valdevez to Opole | 1,388.57 mi (2,234.69 km) |
| Arcos de Valdevez to Orzesze | 1,414.37 mi (2,276.21 km) |
| Arcos de Valdevez to Osowa | 1,499.25 mi (2,412.81 km) |
| Arcos de Valdevez to Ostroda | 1,536.11 mi (2,472.13 km) |
| Arcos de Valdevez to Ostroleka | 1,584.35 mi (2,549.77 km) |
| Arcos de Valdevez to Ostrow Mazowiecka | 1,592.37 mi (2,562.68 km) |
| Arcos de Valdevez to Ostrow Wielkopolski | 1,403.74 mi (2,259.09 km) |
| Arcos de Valdevez to Ostrowiec Swietokrzyski | 1,539.88 mi (2,478.20 km) |
| Arcos de Valdevez to Ostrzeszow | 1,403.51 mi (2,258.74 km) |
| Arcos de Valdevez to Oswiecim | 1,432.98 mi (2,306.16 km) |
| Arcos de Valdevez to Otwock | 1,553.90 mi (2,500.77 km) |
| Arcos de Valdevez to Ozarow Mazowiecki | 1,536.74 mi (2,473.14 km) |
| Arcos de Valdevez to Ozimek | 1,400.49 mi (2,253.87 km) |
| Arcos de Valdevez to Ozorkow | 1,470.11 mi (2,365.91 km) |
| Arcos de Valdevez to Pabianice | 1,467.82 mi (2,362.23 km) |
