| Amposta to Odessa (Texas) | 5,419.27 mi (8,721.47 km) |
| Amposta to Ogden (Utah) | 5,375.78 mi (8,651.49 km) |
| Amposta to Oildale (California) | 5,929.51 mi (9,542.62 km) |
| Amposta to Ojus (Florida) | 4,610.31 mi (7,419.58 km) |
| Amposta to Okemos (Michigan) | 4,186.74 mi (6,737.91 km) |
| Amposta to Oklahoma City (Oklahoma) | 5,047.30 mi (8,122.84 km) |
| Amposta to Okmulgee (Oklahoma) | 4,974.33 mi (8,005.41 km) |
| Amposta to Olathe (Kansas) | 4,786.38 mi (7,702.94 km) |
| Amposta to Old Jamestown (Missouri) | 4,588.76 mi (7,384.89 km) |
| Amposta to Oldsmar (Florida) | 4,652.42 mi (7,487.34 km) |
| Amposta to Olean (New York) | 3,939.69 mi (6,340.32 km) |
| Amposta to Olive Branch (Mississippi) | 4,721.80 mi (7,598.99 km) |
| Amposta to Olivehurst (California) | 5,829.19 mi (9,381.18 km) |
| Amposta to Olney (Maryland) | 3,972.05 mi (6,392.40 km) |
| Amposta to Olympia (Washington) | 5,451.92 mi (8,774.03 km) |
