| Herrin to Orbetello | 4,971.11 mi (8,000.23 km) |
| Herrin to Oria | 5,316.98 mi (8,556.86 km) |
| Herrin to Oristano | 4,959.03 mi (7,980.79 km) |
| Herrin to Orta Nova | 5,202.70 mi (8,372.93 km) |
| Herrin to Orte | 5,019.02 mi (8,077.32 km) |
| Herrin to Ortona | 5,106.31 mi (8,217.82 km) |
| Herrin to Orvieto | 4,997.23 mi (8,042.26 km) |
| Herrin to Orzinuovi | 4,803.11 mi (7,729.85 km) |
| Herrin to Osimo | 5,022.46 mi (8,082.87 km) |
| Herrin to Ospitaletto | 4,802.82 mi (7,729.39 km) |
| Herrin to Ostuni | 5,304.81 mi (8,537.26 km) |
| Herrin to Ottaviano | 5,171.98 mi (8,323.50 km) |
| Herrin to Ovada | 4,779.47 mi (7,691.82 km) |
| Herrin to Ozieri | 4,950.38 mi (7,966.86 km) |
| Herrin to Paceco | 5,209.25 mi (8,383.48 km) |
