| Plainfield to Oerlinghausen | 3,821.85 mi (6,150.67 km) |
| Plainfield to Oestrich-Winkel | 3,850.64 mi (6,197.01 km) |
| Plainfield to Offenburg | 3,892.47 mi (6,264.33 km) |
| Plainfield to Oftersheim | 3,892.60 mi (6,264.54 km) |
| Plainfield to Ohrdruf | 3,935.55 mi (6,333.66 km) |
| Plainfield to Ohringen | 3,934.91 mi (6,332.63 km) |
| Plainfield to Olbernhau | 4,042.36 mi (6,505.56 km) |
| Plainfield to Olching | 4,039.91 mi (6,501.61 km) |
| Plainfield to Oldenburg | 3,772.47 mi (6,071.21 km) |
| Plainfield to Oldenburg in Holstein | 3,841.66 mi (6,182.55 km) |
| Plainfield to Olfen | 3,778.34 mi (6,080.66 km) |
| Plainfield to Olpe | 3,815.32 mi (6,140.16 km) |
| Plainfield to Olsberg | 3,831.80 mi (6,166.68 km) |
| Plainfield to Oranienburg | 3,974.14 mi (6,395.76 km) |
| Plainfield to Ortenberg | 3,882.85 mi (6,248.84 km) |
