| Harran to Oerlinghausen | 1,804.42 mi (2,903.93 km) |
| Harran to Oestrich-Winkel | 1,782.81 mi (2,869.15 km) |
| Harran to Offenburg | 1,754.48 mi (2,823.57 km) |
| Harran to Oftersheim | 1,744.27 mi (2,807.13 km) |
| Harran to Ohrdruf | 1,691.35 mi (2,721.96 km) |
| Harran to Ohringen | 1,701.41 mi (2,738.16 km) |
| Harran to Olbernhau | 1,583.88 mi (2,549.01 km) |
| Harran to Olching | 1,600.62 mi (2,575.95 km) |
| Harran to Oldenburg | 1,854.97 mi (2,985.29 km) |
| Harran to Oldenburg in Holstein | 1,795.46 mi (2,889.51 km) |
| Harran to Olfen | 1,848.59 mi (2,975.01 km) |
| Harran to Olpe | 1,813.24 mi (2,918.13 km) |
| Harran to Olsberg | 1,795.31 mi (2,889.27 km) |
| Harran to Oranienburg | 1,657.71 mi (2,667.83 km) |
| Harran to Ortenberg | 1,747.12 mi (2,811.72 km) |
