| Olaine to Orbetello | 1,138.88 mi (1,832.85 km) |
| Olaine to Oria | 1,160.06 mi (1,866.93 km) |
| Olaine to Oristano | 1,355.46 mi (2,181.40 km) |
| Olaine to Orta Nova | 1,128.78 mi (1,816.60 km) |
| Olaine to Orte | 1,113.01 mi (1,791.21 km) |
| Olaine to Ortona | 1,082.49 mi (1,742.10 km) |
| Olaine to Orvieto | 1,102.32 mi (1,774.01 km) |
| Olaine to Orzinuovi | 989.84 mi (1,592.99 km) |
| Olaine to Osimo | 1,026.25 mi (1,651.59 km) |
| Olaine to Ospitaletto | 977.14 mi (1,572.56 km) |
| Olaine to Ostuni | 1,144.85 mi (1,842.45 km) |
| Olaine to Ottaviano | 1,179.36 mi (1,897.99 km) |
| Olaine to Ovada | 1,067.99 mi (1,718.76 km) |
| Olaine to Ozieri | 1,303.77 mi (2,098.21 km) |
| Olaine to Paceco | 1,399.55 mi (2,252.35 km) |
