| Middletown to Oerlinghausen | 4,254.93 mi (6,847.66 km) |
| Middletown to Oestrich-Winkel | 4,295.64 mi (6,913.17 km) |
| Middletown to Offenburg | 4,345.47 mi (6,993.35 km) |
| Middletown to Oftersheim | 4,339.88 mi (6,984.35 km) |
| Middletown to Ohrdruf | 4,371.28 mi (7,034.90 km) |
| Middletown to Ohringen | 4,381.44 mi (7,051.25 km) |
| Middletown to Olbernhau | 4,474.08 mi (7,200.33 km) |
| Middletown to Olching | 4,488.13 mi (7,222.94 km) |
| Middletown to Oldenburg | 4,199.52 mi (6,758.47 km) |
| Middletown to Oldenburg in Holstein | 4,257.19 mi (6,851.29 km) |
| Middletown to Olfen | 4,215.02 mi (6,783.42 km) |
| Middletown to Olpe | 4,255.13 mi (6,847.97 km) |
| Middletown to Olsberg | 4,268.66 mi (6,869.74 km) |
| Middletown to Oranienburg | 4,394.49 mi (7,072.25 km) |
| Middletown to Ortenberg | 4,324.12 mi (6,959.00 km) |
