| Niscemi to Oerlinghausen | 1,060.88 mi (1,707.33 km) |
| Niscemi to Oestrich-Winkel | 942.72 mi (1,517.17 km) |
| Niscemi to Offenburg | 846.74 mi (1,362.70 km) |
| Niscemi to Oftersheim | 892.67 mi (1,436.61 km) |
| Niscemi to Ohrdruf | 962.02 mi (1,548.22 km) |
| Niscemi to Ohringen | 867.69 mi (1,396.42 km) |
| Niscemi to Olbernhau | 935.35 mi (1,505.30 km) |
| Niscemi to Olching | 779.04 mi (1,253.74 km) |
| Niscemi to Oldenburg | 1,144.18 mi (1,841.38 km) |
| Niscemi to Oldenburg in Holstein | 1,196.54 mi (1,925.65 km) |
| Niscemi to Olfen | 1,062.85 mi (1,710.50 km) |
| Niscemi to Olpe | 1,010.74 mi (1,626.63 km) |
| Niscemi to Olsberg | 1,022.81 mi (1,646.06 km) |
| Niscemi to Oranienburg | 1,079.58 mi (1,737.42 km) |
| Niscemi to Ortenberg | 949.76 mi (1,528.49 km) |
