| Graham to Orbetello | 5,632.07 mi (9,063.94 km) |
| Graham to Oria | 5,906.58 mi (9,505.72 km) |
| Graham to Oristano | 5,713.16 mi (9,194.45 km) |
| Graham to Orta Nova | 5,810.20 mi (9,350.62 km) |
| Graham to Orte | 5,660.42 mi (9,109.56 km) |
| Graham to Ortona | 5,716.47 mi (9,199.77 km) |
| Graham to Orvieto | 5,638.00 mi (9,073.49 km) |
| Graham to Orzinuovi | 5,423.51 mi (8,728.30 km) |
| Graham to Osimo | 5,625.53 mi (9,053.42 km) |
| Graham to Ospitaletto | 5,417.80 mi (8,719.11 km) |
| Graham to Ostuni | 5,890.95 mi (9,480.57 km) |
| Graham to Ottaviano | 5,809.82 mi (9,349.99 km) |
| Graham to Ovada | 5,435.71 mi (8,747.93 km) |
| Graham to Ozieri | 5,684.29 mi (9,147.98 km) |
| Graham to Paceco | 5,934.82 mi (9,551.16 km) |
