| Upland to Orbetello | 6,237.97 mi (10,039.05 km) |
| Upland to Oria | 6,547.94 mi (10,537.89 km) |
| Upland to Oristano | 6,280.60 mi (10,107.65 km) |
| Upland to Orta Nova | 6,442.18 mi (10,367.69 km) |
| Upland to Orte | 6,275.11 mi (10,098.81 km) |
| Upland to Ortona | 6,345.22 mi (10,211.64 km) |
| Upland to Orvieto | 6,252.43 mi (10,062.31 km) |
| Upland to Orzinuovi | 6,041.21 mi (9,722.38 km) |
| Upland to Osimo | 6,255.01 mi (10,066.47 km) |
| Upland to Ospitaletto | 6,037.56 mi (9,716.51 km) |
| Upland to Ostuni | 6,533.33 mi (10,514.37 km) |
| Upland to Ottaviano | 6,429.42 mi (10,347.15 km) |
| Upland to Ovada | 6,038.97 mi (9,718.78 km) |
| Upland to Ozieri | 6,260.05 mi (10,074.58 km) |
| Upland to Paceco | 6,519.87 mi (10,492.71 km) |
