| Siverek to Nuth | 1,863.62 mi (2,999.20 km) |
| Siverek to Oegstgeest | 1,946.87 mi (3,133.18 km) |
| Siverek to Oirschot | 1,899.20 mi (3,056.47 km) |
| Siverek to Oisterwijk | 1,904.97 mi (3,065.75 km) |
| Siverek to Oldebroek | 1,894.96 mi (3,049.65 km) |
| Siverek to Oldenzaal | 1,850.81 mi (2,978.59 km) |
| Siverek to Ommen | 1,875.98 mi (3,019.10 km) |
| Siverek to Oosterend | 1,901.25 mi (3,059.76 km) |
| Siverek to Oosterhout | 1,920.25 mi (3,090.35 km) |
| Siverek to Oosterwolde | 1,892.16 mi (3,045.13 km) |
| Siverek to Oostzaan | 1,935.22 mi (3,114.44 km) |
| Siverek to Opmeer | 1,938.28 mi (3,119.36 km) |
| Siverek to Oss | 1,895.69 mi (3,050.82 km) |
| Siverek to Oud-Beijerland | 1,942.38 mi (3,125.96 km) |
| Siverek to Oudenbosch | 1,932.94 mi (3,110.77 km) |
