| San Severo to Oegstgeest | 886.82 mi (1,427.19 km) |
| San Severo to Oirschot | 827.75 mi (1,332.14 km) |
| San Severo to Oisterwijk | 834.93 mi (1,343.69 km) |
| San Severo to Oldebroek | 865.05 mi (1,392.16 km) |
| San Severo to Oldenzaal | 833.53 mi (1,341.43 km) |
| San Severo to Ommen | 856.82 mi (1,378.93 km) |
| San Severo to Oosterend | 893.04 mi (1,437.21 km) |
| San Severo to Oosterhout | 847.48 mi (1,363.89 km) |
| San Severo to Oosterwolde | 887.26 mi (1,427.90 km) |
| San Severo to Oostzaan | 889.35 mi (1,431.27 km) |
| San Severo to Opmeer | 902.33 mi (1,452.17 km) |
| San Severo to Oss | 836.45 mi (1,346.14 km) |
| San Severo to Oud-Beijerland | 869.28 mi (1,398.97 km) |
| San Severo to Oudenbosch | 853.93 mi (1,374.26 km) |
| San Severo to Oudewater | 867.17 mi (1,395.57 km) |
