| Socorro to Orbetello | 5,964.38 mi (9,598.75 km) |
| Socorro to Oria | 6,298.95 mi (10,137.18 km) |
| Socorro to Oristano | 5,972.63 mi (9,612.03 km) |
| Socorro to Orta Nova | 6,187.09 mi (9,957.16 km) |
| Socorro to Orte | 6,008.46 mi (9,669.68 km) |
| Socorro to Ortona | 6,089.67 mi (9,800.38 km) |
| Socorro to Orvieto | 5,986.14 mi (9,633.77 km) |
| Socorro to Orzinuovi | 5,783.53 mi (9,307.70 km) |
| Socorro to Osimo | 6,002.54 mi (9,660.16 km) |
| Socorro to Ospitaletto | 5,781.87 mi (9,305.02 km) |
| Socorro to Ostuni | 6,285.70 mi (10,115.85 km) |
| Socorro to Ottaviano | 6,163.18 mi (9,918.68 km) |
| Socorro to Ovada | 5,768.31 mi (9,283.19 km) |
| Socorro to Ozieri | 5,959.64 mi (9,591.11 km) |
| Socorro to Paceco | 6,220.59 mi (10,011.08 km) |
