| Suffern to Oerlinghausen | 3,788.25 mi (6,096.59 km) |
| Suffern to Oestrich-Winkel | 3,817.75 mi (6,144.07 km) |
| Suffern to Offenburg | 3,860.11 mi (6,212.25 km) |
| Suffern to Oftersheim | 3,859.86 mi (6,211.84 km) |
| Suffern to Ohrdruf | 3,902.12 mi (6,279.86 km) |
| Suffern to Ohringen | 3,902.13 mi (6,279.88 km) |
| Suffern to Olbernhau | 4,008.74 mi (6,451.44 km) |
| Suffern to Olching | 4,007.26 mi (6,449.06 km) |
| Suffern to Oldenburg | 3,738.55 mi (6,016.61 km) |
| Suffern to Oldenburg in Holstein | 3,807.20 mi (6,127.09 km) |
| Suffern to Olfen | 3,744.94 mi (6,026.89 km) |
| Suffern to Olpe | 3,782.10 mi (6,086.70 km) |
| Suffern to Olsberg | 3,798.41 mi (6,112.95 km) |
| Suffern to Oranienburg | 3,939.93 mi (6,340.70 km) |
| Suffern to Ortenberg | 3,849.73 mi (6,195.54 km) |
