| Nicholasville to Oerlinghausen | 4,342.54 mi (6,988.65 km) |
| Nicholasville to Oestrich-Winkel | 4,380.54 mi (7,049.80 km) |
| Nicholasville to Offenburg | 4,428.39 mi (7,126.81 km) |
| Nicholasville to Oftersheim | 4,424.25 mi (7,120.14 km) |
| Nicholasville to Ohrdruf | 4,458.39 mi (7,175.08 km) |
| Nicholasville to Ohringen | 4,466.03 mi (7,187.38 km) |
| Nicholasville to Olbernhau | 4,562.14 mi (7,342.05 km) |
| Nicholasville to Olching | 4,572.36 mi (7,358.51 km) |
| Nicholasville to Oldenburg | 4,288.37 mi (6,901.46 km) |
| Nicholasville to Oldenburg in Holstein | 4,348.37 mi (6,998.02 km) |
| Nicholasville to Olfen | 4,301.80 mi (6,923.09 km) |
| Nicholasville to Olpe | 4,341.23 mi (6,986.53 km) |
| Nicholasville to Olsberg | 4,355.44 mi (7,009.40 km) |
| Nicholasville to Oranienburg | 4,484.84 mi (7,217.64 km) |
| Nicholasville to Ortenberg | 4,409.93 mi (7,097.09 km) |
