| Gardnerville Ranchos to Orbetello | 6,031.54 mi (9,706.82 km) |
| Gardnerville Ranchos to Oria | 6,328.15 mi (10,184.17 km) |
| Gardnerville Ranchos to Oristano | 6,089.87 mi (9,800.71 km) |
| Gardnerville Ranchos to Orta Nova | 6,225.87 mi (10,019.57 km) |
| Gardnerville Ranchos to Orte | 6,065.24 mi (9,761.07 km) |
| Gardnerville Ranchos to Ortona | 6,129.89 mi (9,865.10 km) |
| Gardnerville Ranchos to Orvieto | 6,042.59 mi (9,724.61 km) |
| Gardnerville Ranchos to Orzinuovi | 5,829.26 mi (9,381.29 km) |
| Gardnerville Ranchos to Osimo | 6,039.06 mi (9,718.93 km) |
| Gardnerville Ranchos to Ospitaletto | 5,824.76 mi (9,374.05 km) |
| Gardnerville Ranchos to Ostuni | 6,313.07 mi (10,159.91 km) |
| Gardnerville Ranchos to Ottaviano | 6,218.12 mi (10,007.10 km) |
| Gardnerville Ranchos to Ovada | 5,832.84 mi (9,387.05 km) |
| Gardnerville Ranchos to Ozieri | 6,065.89 mi (9,762.10 km) |
| Gardnerville Ranchos to Paceco | 6,322.98 mi (10,175.85 km) |
