| Killamarsh to Orbetello | 946.87 mi (1,523.85 km) |
| Killamarsh to Oria | 1,251.23 mi (2,013.66 km) |
| Killamarsh to Oristano | 1,036.97 mi (1,668.83 km) |
| Killamarsh to Orta Nova | 1,144.03 mi (1,841.14 km) |
| Killamarsh to Orte | 979.33 mi (1,576.09 km) |
| Killamarsh to Ortona | 1,046.97 mi (1,684.94 km) |
| Killamarsh to Orvieto | 956.68 mi (1,539.62 km) |
| Killamarsh to Orzinuovi | 743.64 mi (1,196.78 km) |
| Killamarsh to Osimo | 956.91 mi (1,539.99 km) |
| Killamarsh to Ospitaletto | 739.57 mi (1,190.23 km) |
| Killamarsh to Ostuni | 1,237.02 mi (1,990.80 km) |
| Killamarsh to Ottaviano | 1,132.50 mi (1,822.58 km) |
| Killamarsh to Ovada | 749.31 mi (1,205.90 km) |
| Killamarsh to Ozieri | 1,003.14 mi (1,614.40 km) |
| Killamarsh to Paceco | 1,248.56 mi (2,009.37 km) |
