| Opatija to University Place (Washington) | 5,527.61 mi (8,895.83 km) |
| Opatija to Upland (California) | 6,179.65 mi (9,945.19 km) |
| Opatija to Upper Arlington (Ohio) | 4,639.45 mi (7,466.47 km) |
| Opatija to Upper Grand Lagoon (Florida) | 5,212.14 mi (8,388.12 km) |
| Opatija to Upper Montclair (New Jersey) | 4,240.76 mi (6,824.84 km) |
| Opatija to Urbana (Illinois) | 4,837.18 mi (7,784.69 km) |
| Opatija to Urbana (Maryland) | 4,436.17 mi (7,139.33 km) |
| Opatija to Urbana (Ohio) | 4,663.06 mi (7,504.46 km) |
| Opatija to Urbandale (Iowa) | 4,972.73 mi (8,002.83 km) |
| Opatija to Utica (New York) | 4,190.43 mi (6,743.84 km) |
| Opatija to Uvalde (Texas) | 5,834.53 mi (9,389.78 km) |
| Opatija to Vacaville (California) | 6,047.90 mi (9,733.16 km) |
| Opatija to Vadnais Heights (Minnesota) | 4,781.25 mi (7,694.68 km) |
| Opatija to Vail (Arizona) | 6,078.62 mi (9,782.59 km) |
| Opatija to Valdosta (Georgia) | 5,073.85 mi (8,165.58 km) |
