| Oakton to Orbetello | 4,421.19 mi (7,115.22 km) |
| Oakton to Oria | 4,774.02 mi (7,683.05 km) |
| Oakton to Oristano | 4,390.43 mi (7,065.72 km) |
| Oakton to Orta Nova | 4,658.64 mi (7,497.36 km) |
| Oakton to Orte | 4,472.12 mi (7,197.18 km) |
| Oakton to Ortona | 4,564.01 mi (7,345.07 km) |
| Oakton to Orvieto | 4,450.99 mi (7,163.17 km) |
| Oakton to Orzinuovi | 4,266.23 mi (6,865.83 km) |
| Oakton to Osimo | 4,483.78 mi (7,215.94 km) |
| Oakton to Ospitaletto | 4,267.17 mi (6,867.35 km) |
| Oakton to Ostuni | 4,762.87 mi (7,665.10 km) |
| Oakton to Ottaviano | 4,622.25 mi (7,438.79 km) |
| Oakton to Ovada | 4,235.26 mi (6,815.99 km) |
| Oakton to Ozieri | 4,385.94 mi (7,058.49 km) |
| Oakton to Paceco | 4,641.15 mi (7,469.21 km) |
