| South Lake Tahoe to Orbetello | 6,036.03 mi (9,714.05 km) |
| South Lake Tahoe to Oria | 6,332.02 mi (10,190.40 km) |
| South Lake Tahoe to Oristano | 6,095.01 mi (9,808.98 km) |
| South Lake Tahoe to Orta Nova | 6,229.91 mi (10,026.07 km) |
| South Lake Tahoe to Orte | 6,069.58 mi (9,768.05 km) |
| South Lake Tahoe to Ortona | 6,133.98 mi (9,871.69 km) |
| South Lake Tahoe to Orvieto | 6,046.93 mi (9,731.59 km) |
| South Lake Tahoe to Orzinuovi | 5,833.54 mi (9,388.17 km) |
| South Lake Tahoe to Osimo | 6,043.14 mi (9,725.49 km) |
| South Lake Tahoe to Ospitaletto | 5,829.00 mi (9,380.87 km) |
| South Lake Tahoe to Ostuni | 6,316.92 mi (10,166.10 km) |
| South Lake Tahoe to Ottaviano | 6,222.38 mi (10,013.95 km) |
| South Lake Tahoe to Ovada | 5,837.37 mi (9,394.34 km) |
| South Lake Tahoe to Ozieri | 6,070.89 mi (9,770.15 km) |
| South Lake Tahoe to Paceco | 6,327.84 mi (10,183.67 km) |
