| Ardmore to Oerlinghausen | 4,995.68 mi (8,039.77 km) |
| Ardmore to Oestrich-Winkel | 5,046.21 mi (8,121.09 km) |
| Ardmore to Offenburg | 5,102.29 mi (8,211.34 km) |
| Ardmore to Oftersheim | 5,092.07 mi (8,194.90 km) |
| Ardmore to Ohrdruf | 5,113.55 mi (8,229.46 km) |
| Ardmore to Ohringen | 5,132.80 mi (8,260.44 km) |
| Ardmore to Olbernhau | 5,212.16 mi (8,388.17 km) |
| Ardmore to Olching | 5,240.33 mi (8,433.50 km) |
| Ardmore to Oldenburg | 4,935.40 mi (7,942.76 km) |
| Ardmore to Oldenburg in Holstein | 4,982.38 mi (8,018.36 km) |
| Ardmore to Olfen | 4,959.09 mi (7,980.88 km) |
| Ardmore to Olpe | 5,001.60 mi (8,049.29 km) |
| Ardmore to Olsberg | 5,012.54 mi (8,066.90 km) |
| Ardmore to Oranienburg | 5,122.95 mi (8,244.59 km) |
| Ardmore to Ortenberg | 5,071.41 mi (8,161.64 km) |
