| Niscemi to Oberkirch | 848.07 mi (1,364.83 km) |
| Niscemi to Obernburg am Main | 914.73 mi (1,472.11 km) |
| Niscemi to Obernkirchen | 1,075.25 mi (1,730.44 km) |
| Niscemi to Oberschleissheim | 780.01 mi (1,255.30 km) |
| Niscemi to Oberstdorf | 738.99 mi (1,189.29 km) |
| Niscemi to Obertraubling | 823.93 mi (1,325.98 km) |
| Niscemi to Obertshausen | 933.98 mi (1,503.10 km) |
| Niscemi to Oberursel | 946.68 mi (1,523.54 km) |
| Niscemi to Ochsenfurt | 890.04 mi (1,432.39 km) |
| Niscemi to Ochsenhausen | 787.28 mi (1,267.00 km) |
| Niscemi to Ochtrup | 1,097.30 mi (1,765.93 km) |
| Niscemi to Odenthal | 1,023.55 mi (1,647.25 km) |
| Niscemi to Oelde | 1,059.04 mi (1,704.36 km) |
| Niscemi to Oelsnitz | 923.17 mi (1,485.70 km) |
| Niscemi to Oer-Erkenschwick | 1,060.17 mi (1,706.18 km) |
