| Calne to Orangevale (California) | 5,212.88 mi (8,389.32 km) |
| Calne to Orchards (Washington) | 4,852.01 mi (7,808.55 km) |
| Calne to Orcutt (California) | 5,406.54 mi (8,700.98 km) |
| Calne to Oregon (Ohio) | 3,724.54 mi (5,994.07 km) |
| Calne to Oregon (Wisconsin) | 3,897.00 mi (6,271.61 km) |
| Calne to Oregon City (Oregon) | 4,873.42 mi (7,843.02 km) |
| Calne to Orem (Utah) | 4,821.84 mi (7,760.00 km) |
| Calne to Orinda (California) | 5,288.16 mi (8,510.48 km) |
| Calne to Orland Park (Illinois) | 3,899.21 mi (6,275.17 km) |
| Calne to Orlando (Florida) | 4,262.25 mi (6,859.43 km) |
| Calne to Ormond Beach (Florida) | 4,211.67 mi (6,778.03 km) |
| Calne to Oro Valley (Arizona) | 5,225.65 mi (8,409.87 km) |
| Calne to Oroville (California) | 5,176.80 mi (8,331.25 km) |
| Calne to Oshkosh (Wisconsin) | 3,815.85 mi (6,141.02 km) |
| Calne to Oskaloosa (Iowa) | 4,096.03 mi (6,591.93 km) |
