| Opatija to Odessa (Texas) | 5,790.35 mi (9,318.66 km) |
| Opatija to Ogden (Utah) | 5,598.46 mi (9,009.85 km) |
| Opatija to Oildale (California) | 6,142.31 mi (9,885.09 km) |
| Opatija to Ojus (Florida) | 5,168.43 mi (8,317.79 km) |
| Opatija to Okemos (Michigan) | 4,571.55 mi (7,357.20 km) |
| Opatija to Oklahoma City (Oklahoma) | 5,421.58 mi (8,725.18 km) |
| Opatija to Okmulgee (Oklahoma) | 5,357.29 mi (8,621.72 km) |
| Opatija to Olathe (Kansas) | 5,147.56 mi (8,284.20 km) |
| Opatija to Old Jamestown (Missouri) | 4,978.34 mi (8,011.87 km) |
| Opatija to Oldsmar (Florida) | 5,180.59 mi (8,337.35 km) |
| Opatija to Olean (New York) | 4,362.71 mi (7,021.10 km) |
| Opatija to Olive Branch (Mississippi) | 5,149.56 mi (8,287.41 km) |
| Opatija to Olivehurst (California) | 5,993.63 mi (9,645.81 km) |
| Opatija to Olney (Maryland) | 4,432.67 mi (7,133.69 km) |
| Opatija to Olympia (Washington) | 5,546.05 mi (8,925.51 km) |
