| Federal Heights to Orbetello | 5,493.05 mi (8,840.21 km) |
| Federal Heights to Oria | 5,816.24 mi (9,360.34 km) |
| Federal Heights to Oristano | 5,520.34 mi (8,884.13 km) |
| Federal Heights to Orta Nova | 5,707.02 mi (9,184.56 km) |
| Federal Heights to Orte | 5,533.66 mi (8,905.56 km) |
| Federal Heights to Ortona | 5,609.51 mi (9,027.64 km) |
| Federal Heights to Orvieto | 5,511.08 mi (8,869.23 km) |
| Federal Heights to Orzinuovi | 5,303.45 mi (8,535.08 km) |
| Federal Heights to Osimo | 5,520.58 mi (8,884.52 km) |
| Federal Heights to Ospitaletto | 5,300.79 mi (8,530.80 km) |
| Federal Heights to Ostuni | 5,802.29 mi (9,337.88 km) |
| Federal Heights to Ottaviano | 5,688.65 mi (9,155.00 km) |
| Federal Heights to Ovada | 5,294.82 mi (8,521.19 km) |
| Federal Heights to Ozieri | 5,502.96 mi (8,856.16 km) |
| Federal Heights to Paceco | 5,764.04 mi (9,276.33 km) |
