| Federal Way to Orbetello | 5,617.33 mi (9,040.22 km) |
| Federal Way to Oria | 5,891.13 mi (9,480.86 km) |
| Federal Way to Oristano | 5,699.10 mi (9,171.82 km) |
| Federal Way to Orta Nova | 5,794.95 mi (9,326.07 km) |
| Federal Way to Orte | 5,645.51 mi (9,085.58 km) |
| Federal Way to Ortona | 5,701.30 mi (9,175.36 km) |
| Federal Way to Orvieto | 5,623.11 mi (9,049.52 km) |
| Federal Way to Orzinuovi | 5,408.62 mi (8,704.33 km) |
| Federal Way to Osimo | 5,610.37 mi (9,029.02 km) |
| Federal Way to Ospitaletto | 5,402.87 mi (8,695.08 km) |
| Federal Way to Ostuni | 5,875.49 mi (9,455.69 km) |
| Federal Way to Ottaviano | 5,794.78 mi (9,325.80 km) |
| Federal Way to Ovada | 5,421.08 mi (8,724.38 km) |
| Federal Way to Ozieri | 5,670.08 mi (9,125.11 km) |
| Federal Way to Paceco | 5,920.37 mi (9,527.91 km) |
