| Massama to Oerlinghausen | 1,254.92 mi (2,019.59 km) |
| Massama to Oestrich-Winkel | 1,148.68 mi (1,848.62 km) |
| Massama to Offenburg | 1,087.14 mi (1,749.59 km) |
| Massama to Oftersheim | 1,145.58 mi (1,843.63 km) |
| Massama to Ohrdruf | 1,280.26 mi (2,060.38 km) |
| Massama to Ohringen | 1,174.34 mi (1,889.92 km) |
| Massama to Olbernhau | 1,372.59 mi (2,208.96 km) |
| Massama to Olching | 1,215.38 mi (1,955.96 km) |
| Massama to Oldenburg | 1,294.41 mi (2,083.15 km) |
| Massama to Oldenburg in Holstein | 1,428.99 mi (2,299.74 km) |
| Massama to Olfen | 1,202.08 mi (1,934.56 km) |
| Massama to Olpe | 1,185.61 mi (1,908.05 km) |
| Massama to Olsberg | 1,221.97 mi (1,966.58 km) |
| Massama to Oranienburg | 1,442.52 mi (2,321.51 km) |
| Massama to Ortenberg | 1,200.98 mi (1,932.79 km) |
