| Cities | Distance |
|---|---|
| Mainz to Oestrich-Winkel | 11.90 mi (19.16 km) |
| Mainz to Offenburg | 105.86 mi (170.37 km) |
| Mainz to Oftersheim | 44.66 mi (71.87 km) |
| Mainz to Ohrdruf | 123.28 mi (198.40 km) |
| Mainz to Ohringen | 77.33 mi (124.45 km) |
| Mainz to Olbernhau | 228.38 mi (367.54 km) |
| Mainz to Olching | 184.97 mi (297.69 km) |
| Mainz to Oldenburg | 218.39 mi (351.46 km) |
| Mainz to Oldenburg in Holstein | 318.17 mi (512.04 km) |
| Mainz to Olfen | 125.81 mi (202.47 km) |
| Mainz to Olpe | 73.90 mi (118.93 km) |
| Mainz to Olsberg | 94.90 mi (152.73 km) |
| Mainz to Oranienburg | 287.32 mi (462.40 km) |
| Mainz to Ortenberg | 43.36 mi (69.79 km) |
| Mainz to Oschatz | 230.73 mi (371.33 km) |