| Amposta to Orangevale (California) | 5,838.17 mi (9,395.62 km) |
| Amposta to Orchards (Washington) | 5,512.14 mi (8,870.93 km) |
| Amposta to Orcutt (California) | 6,010.28 mi (9,672.61 km) |
| Amposta to Oregon (Ohio) | 4,179.52 mi (6,726.29 km) |
| Amposta to Oregon (Wisconsin) | 4,394.96 mi (7,073.00 km) |
| Amposta to Oregon City (Oregon) | 5,532.41 mi (8,903.55 km) |
| Amposta to Orem (Utah) | 5,410.54 mi (8,707.42 km) |
| Amposta to Orinda (California) | 5,914.30 mi (9,518.15 km) |
| Amposta to Orland Park (Illinois) | 4,377.21 mi (7,044.44 km) |
| Amposta to Orlando (Florida) | 4,569.10 mi (7,353.26 km) |
| Amposta to Ormond Beach (Florida) | 4,525.11 mi (7,282.46 km) |
| Amposta to Oro Valley (Arizona) | 5,763.81 mi (9,275.96 km) |
| Amposta to Oroville (California) | 5,807.23 mi (9,345.84 km) |
| Amposta to Oshkosh (Wisconsin) | 4,319.78 mi (6,952.01 km) |
| Amposta to Oskaloosa (Iowa) | 4,596.17 mi (7,396.82 km) |
