| Cities | Distance |
|---|---|
| Unna to Oerlinghausen | 51.38 mi (82.69 km) |
| Unna to Oestrich-Winkel | 106.91 mi (172.05 km) |
| Unna to Offenburg | 212.26 mi (341.59 km) |
| Unna to Oftersheim | 154.63 mi (248.85 km) |
| Unna to Ohrdruf | 140.57 mi (226.23 km) |
| Unna to Ohringen | 179.97 mi (289.63 km) |
| Unna to Olbernhau | 252.06 mi (405.65 km) |
| Unna to Olching | 281.33 mi (452.75 km) |
| Unna to Oldenburg | 113.37 mi (182.45 km) |
| Unna to Oldenburg in Holstein | 232.79 mi (374.64 km) |
| Unna to Olfen | 18.16 mi (29.23 km) |
| Unna to Olpe | 36.33 mi (58.47 km) |
| Unna to Olsberg | 36.51 mi (58.76 km) |
| Unna to Oranienburg | 249.80 mi (402.01 km) |
| Unna to Ortenberg | 100.86 mi (162.31 km) |