| Oxon Hill to Oerlinghausen | 4,007.33 mi (6,449.18 km) |
| Oxon Hill to Oestrich-Winkel | 4,035.95 mi (6,495.24 km) |
| Oxon Hill to Offenburg | 4,077.47 mi (6,562.06 km) |
| Oxon Hill to Oftersheim | 4,077.84 mi (6,562.65 km) |
| Oxon Hill to Ohrdruf | 4,121.02 mi (6,632.14 km) |
| Oxon Hill to Ohringen | 4,120.17 mi (6,630.78 km) |
| Oxon Hill to Olbernhau | 4,227.85 mi (6,804.07 km) |
| Oxon Hill to Olching | 4,225.10 mi (6,799.63 km) |
| Oxon Hill to Oldenburg | 3,957.93 mi (6,369.67 km) |
| Oxon Hill to Oldenburg in Holstein | 4,026.88 mi (6,480.63 km) |
| Oxon Hill to Olfen | 3,963.81 mi (6,379.14 km) |
| Oxon Hill to Olpe | 4,000.75 mi (6,438.58 km) |
| Oxon Hill to Olsberg | 4,017.26 mi (6,465.16 km) |
| Oxon Hill to Oranienburg | 4,159.50 mi (6,694.07 km) |
| Oxon Hill to Ortenberg | 4,068.25 mi (6,547.21 km) |
