| Butler to Orbetello | 4,455.76 mi (7,170.85 km) |
| Butler to Oria | 4,804.83 mi (7,732.63 km) |
| Butler to Oristano | 4,436.72 mi (7,140.21 km) |
| Butler to Orta Nova | 4,689.97 mi (7,547.78 km) |
| Butler to Orte | 4,504.93 mi (7,249.99 km) |
| Butler to Ortona | 4,594.23 mi (7,393.70 km) |
| Butler to Orvieto | 4,483.39 mi (7,215.32 km) |
| Butler to Orzinuovi | 4,293.01 mi (6,908.94 km) |
| Butler to Osimo | 4,511.83 mi (7,261.09 km) |
| Butler to Ospitaletto | 4,293.26 mi (6,909.33 km) |
| Butler to Ostuni | 4,793.08 mi (7,713.71 km) |
| Butler to Ottaviano | 4,656.89 mi (7,494.54 km) |
| Butler to Ovada | 4,266.25 mi (6,865.87 km) |
| Butler to Ozieri | 4,429.51 mi (7,128.61 km) |
| Butler to Paceco | 4,687.29 mi (7,543.47 km) |
