| Tortona to Orangevale (California) | 5,881.07 mi (9,464.66 km) |
| Tortona to Orchards (Washington) | 5,510.74 mi (8,868.68 km) |
| Tortona to Orcutt (California) | 6,077.96 mi (9,781.53 km) |
| Tortona to Oregon (Ohio) | 4,380.07 mi (7,049.04 km) |
| Tortona to Oregon (Wisconsin) | 4,562.46 mi (7,342.58 km) |
| Tortona to Oregon City (Oregon) | 5,532.55 mi (8,903.78 km) |
| Tortona to Orem (Utah) | 5,494.93 mi (8,843.23 km) |
| Tortona to Orinda (California) | 5,956.07 mi (9,585.36 km) |
| Tortona to Orland Park (Illinois) | 4,560.68 mi (7,339.70 km) |
| Tortona to Orlando (Florida) | 4,868.88 mi (7,835.70 km) |
| Tortona to Ormond Beach (Florida) | 4,820.82 mi (7,758.37 km) |
| Tortona to Oro Valley (Arizona) | 5,898.05 mi (9,492.00 km) |
| Tortona to Oroville (California) | 5,843.93 mi (9,404.89 km) |
| Tortona to Oshkosh (Wisconsin) | 4,482.23 mi (7,213.45 km) |
| Tortona to Oskaloosa (Iowa) | 4,762.28 mi (7,664.14 km) |
