| Granbury to Orbetello | 5,584.37 mi (8,987.18 km) |
| Granbury to Oria | 5,928.49 mi (9,540.99 km) |
| Granbury to Oristano | 5,574.89 mi (8,971.91 km) |
| Granbury to Orta Nova | 5,814.57 mi (9,357.64 km) |
| Granbury to Orte | 5,631.66 mi (9,063.28 km) |
| Granbury to Ortona | 5,717.91 mi (9,202.09 km) |
| Granbury to Orvieto | 5,609.76 mi (9,028.03 km) |
| Granbury to Orzinuovi | 5,413.85 mi (8,712.75 km) |
| Granbury to Osimo | 5,633.34 mi (9,065.98 km) |
| Granbury to Ospitaletto | 5,413.28 mi (8,711.84 km) |
| Granbury to Ostuni | 5,916.10 mi (9,521.04 km) |
| Granbury to Ottaviano | 5,785.03 mi (9,310.11 km) |
| Granbury to Ovada | 5,391.82 mi (8,677.30 km) |
| Granbury to Ozieri | 5,565.82 mi (8,957.32 km) |
| Granbury to Paceco | 5,824.98 mi (9,374.41 km) |
