| Acqui Terme to Oegstgeest | 549.97 mi (885.09 km) |
| Acqui Terme to Oirschot | 493.52 mi (794.25 km) |
| Acqui Terme to Oisterwijk | 500.35 mi (805.23 km) |
| Acqui Terme to Oldebroek | 549.72 mi (884.69 km) |
| Acqui Terme to Oldenzaal | 532.54 mi (857.04 km) |
| Acqui Terme to Ommen | 549.73 mi (884.70 km) |
| Acqui Terme to Oosterend | 585.56 mi (942.37 km) |
| Acqui Terme to Oosterhout | 509.18 mi (819.44 km) |
| Acqui Terme to Oosterwolde | 582.85 mi (938.01 km) |
| Acqui Terme to Oostzaan | 560.31 mi (901.73 km) |
| Acqui Terme to Opmeer | 576.98 mi (928.56 km) |
| Acqui Terme to Oss | 508.30 mi (818.02 km) |
| Acqui Terme to Oud-Beijerland | 527.48 mi (848.89 km) |
| Acqui Terme to Oudenbosch | 510.92 mi (822.25 km) |
| Acqui Terme to Oudewater | 533.30 mi (858.27 km) |
