| Naugatuck to Oerlinghausen | 3,728.63 mi (6,000.65 km) |
| Naugatuck to Oestrich-Winkel | 3,757.43 mi (6,046.99 km) |
| Naugatuck to Offenburg | 3,799.36 mi (6,114.48 km) |
| Naugatuck to Oftersheim | 3,799.41 mi (6,114.56 km) |
| Naugatuck to Ohrdruf | 3,842.32 mi (6,183.61 km) |
| Naugatuck to Ohringen | 3,841.71 mi (6,182.64 km) |
| Naugatuck to Olbernhau | 3,949.15 mi (6,355.54 km) |
| Naugatuck to Olching | 3,946.73 mi (6,351.65 km) |
| Naugatuck to Oldenburg | 3,679.32 mi (5,921.29 km) |
| Naugatuck to Oldenburg in Holstein | 3,748.70 mi (6,032.95 km) |
| Naugatuck to Olfen | 3,685.11 mi (5,930.61 km) |
| Naugatuck to Olpe | 3,722.08 mi (5,990.11 km) |
| Naugatuck to Olsberg | 3,738.56 mi (6,016.63 km) |
| Naugatuck to Oranienburg | 3,881.07 mi (6,245.98 km) |
| Naugatuck to Ortenberg | 3,789.61 mi (6,098.79 km) |
