| Sessa Aurunca to Oegstgeest | 877.86 mi (1,412.77 km) |
| Sessa Aurunca to Oirschot | 818.84 mi (1,317.79 km) |
| Sessa Aurunca to Oisterwijk | 826.01 mi (1,329.33 km) |
| Sessa Aurunca to Oldebroek | 861.75 mi (1,386.84 km) |
| Sessa Aurunca to Oldenzaal | 833.41 mi (1,341.24 km) |
| Sessa Aurunca to Ommen | 855.53 mi (1,376.84 km) |
| Sessa Aurunca to Oosterend | 892.14 mi (1,435.75 km) |
| Sessa Aurunca to Oosterhout | 837.65 mi (1,348.07 km) |
| Sessa Aurunca to Oosterwolde | 887.06 mi (1,427.58 km) |
| Sessa Aurunca to Oostzaan | 882.64 mi (1,420.47 km) |
| Sessa Aurunca to Opmeer | 896.80 mi (1,443.26 km) |
| Sessa Aurunca to Oss | 829.34 mi (1,334.69 km) |
| Sessa Aurunca to Oud-Beijerland | 858.67 mi (1,381.90 km) |
| Sessa Aurunca to Oudenbosch | 842.79 mi (1,356.34 km) |
| Sessa Aurunca to Oudewater | 858.84 mi (1,382.18 km) |
