| Drobak to Orbetello | 1,190.55 mi (1,916.00 km) |
| Drobak to Oria | 1,358.38 mi (2,186.11 km) |
| Drobak to Oristano | 1,368.22 mi (2,201.94 km) |
| Drobak to Orta Nova | 1,285.49 mi (2,068.79 km) |
| Drobak to Orte | 1,191.18 mi (1,917.02 km) |
| Drobak to Ortona | 1,207.15 mi (1,942.71 km) |
| Drobak to Orvieto | 1,172.69 mi (1,887.27 km) |
| Drobak to Orzinuovi | 986.16 mi (1,587.07 km) |
| Drobak to Osimo | 1,124.58 mi (1,809.84 km) |
| Drobak to Ospitaletto | 975.28 mi (1,569.56 km) |
| Drobak to Ostuni | 1,342.06 mi (2,159.83 km) |
| Drobak to Ottaviano | 1,310.62 mi (2,109.23 km) |
| Drobak to Ovada | 1,041.59 mi (1,676.28 km) |
| Drobak to Ozieri | 1,320.30 mi (2,124.82 km) |
| Drobak to Paceco | 1,500.56 mi (2,414.92 km) |
