| Modica to Oerlinghausen | 1,084.81 mi (1,745.83 km) |
| Modica to Oestrich-Winkel | 967.74 mi (1,557.42 km) |
| Modica to Offenburg | 872.43 mi (1,404.04 km) |
| Modica to Oftersheim | 917.56 mi (1,476.67 km) |
| Modica to Ohrdruf | 984.88 mi (1,585.02 km) |
| Modica to Ohringen | 892.02 mi (1,435.56 km) |
| Modica to Olbernhau | 956.06 mi (1,538.64 km) |
| Modica to Olching | 802.20 mi (1,291.01 km) |
| Modica to Oldenburg | 1,168.00 mi (1,879.72 km) |
| Modica to Oldenburg in Holstein | 1,218.54 mi (1,961.04 km) |
| Modica to Olfen | 1,087.59 mi (1,750.31 km) |
| Modica to Olpe | 1,035.47 mi (1,666.43 km) |
| Modica to Olsberg | 1,047.05 mi (1,685.06 km) |
| Modica to Oranienburg | 1,100.17 mi (1,770.56 km) |
| Modica to Ortenberg | 973.97 mi (1,567.45 km) |
