| Essex to Oerlinghausen | 3,962.37 mi (6,376.81 km) |
| Essex to Oestrich-Winkel | 3,991.29 mi (6,423.35 km) |
| Essex to Offenburg | 4,033.06 mi (6,490.58 km) |
| Essex to Oftersheim | 4,033.24 mi (6,490.87 km) |
| Essex to Ohrdruf | 4,076.13 mi (6,559.89 km) |
| Essex to Ohringen | 4,075.56 mi (6,558.97 km) |
| Essex to Olbernhau | 4,182.88 mi (6,731.69 km) |
| Essex to Olching | 4,180.54 mi (6,727.93 km) |
| Essex to Oldenburg | 3,912.85 mi (6,297.12 km) |
| Essex to Oldenburg in Holstein | 3,981.63 mi (6,407.82 km) |
| Essex to Olfen | 3,918.92 mi (6,306.90 km) |
| Essex to Olpe | 3,955.94 mi (6,366.47 km) |
| Essex to Olsberg | 3,972.38 mi (6,392.93 km) |
| Essex to Oranienburg | 4,114.33 mi (6,621.37 km) |
| Essex to Ortenberg | 4,023.48 mi (6,475.16 km) |
