| Harran to Nuth | 1,891.10 mi (3,043.44 km) |
| Harran to Oegstgeest | 1,976.34 mi (3,180.61 km) |
| Harran to Oirschot | 1,927.65 mi (3,102.25 km) |
| Harran to Oisterwijk | 1,933.54 mi (3,111.73 km) |
| Harran to Oldebroek | 1,925.53 mi (3,098.84 km) |
| Harran to Oldenzaal | 1,881.58 mi (3,028.10 km) |
| Harran to Ommen | 1,906.91 mi (3,068.87 km) |
| Harran to Oosterend | 1,932.95 mi (3,110.78 km) |
| Harran to Oosterhout | 1,948.81 mi (3,136.31 km) |
| Harran to Oosterwolde | 1,923.93 mi (3,096.27 km) |
| Harran to Oostzaan | 1,965.34 mi (3,162.91 km) |
| Harran to Opmeer | 1,968.94 mi (3,168.70 km) |
| Harran to Oss | 1,924.75 mi (3,097.59 km) |
| Harran to Oud-Beijerland | 1,971.11 mi (3,172.20 km) |
| Harran to Oudenbosch | 1,961.27 mi (3,156.36 km) |
