| Kirkwood to Orbetello | 4,993.61 mi (8,036.44 km) |
| Kirkwood to Oria | 5,337.18 mi (8,589.36 km) |
| Kirkwood to Oristano | 4,986.79 mi (8,025.46 km) |
| Kirkwood to Orta Nova | 5,223.33 mi (8,406.14 km) |
| Kirkwood to Orte | 5,040.65 mi (8,112.14 km) |
| Kirkwood to Ortona | 5,126.62 mi (8,250.50 km) |
| Kirkwood to Orvieto | 5,018.71 mi (8,076.84 km) |
| Kirkwood to Orzinuovi | 4,822.45 mi (7,760.98 km) |
| Kirkwood to Osimo | 5,041.94 mi (8,114.22 km) |
| Kirkwood to Ospitaletto | 4,821.85 mi (7,760.02 km) |
| Kirkwood to Ostuni | 5,324.75 mi (8,569.36 km) |
| Kirkwood to Ottaviano | 5,194.17 mi (8,359.20 km) |
| Kirkwood to Ovada | 4,800.73 mi (7,726.04 km) |
| Kirkwood to Ozieri | 4,976.93 mi (8,009.60 km) |
| Kirkwood to Paceco | 5,236.56 mi (8,427.44 km) |
