| Opatija to Oakley (California) | 6,062.76 mi (9,757.07 km) |
| Opatija to Oakton (Virginia) | 4,453.45 mi (7,167.14 km) |
| Opatija to Oakville (Missouri) | 4,998.63 mi (8,044.51 km) |
| Opatija to Oatfield (Oregon) | 5,637.49 mi (9,072.66 km) |
| Opatija to Ocala (Florida) | 5,104.12 mi (8,214.29 km) |
| Opatija to Ocean Acres (New Jersey) | 4,289.94 mi (6,903.99 km) |
| Opatija to Ocean City (New Jersey) | 4,323.51 mi (6,958.01 km) |
| Opatija to Ocean Pines (Maryland) | 4,384.22 mi (7,055.72 km) |
| Opatija to Ocean Pointe (Hawaii) | 7,806.64 mi (12,563.57 km) |
| Opatija to Ocean Springs (Mississippi) | 5,329.28 mi (8,576.64 km) |
| Opatija to Oceanside (California) | 6,221.59 mi (10,012.68 km) |
| Opatija to Oceanside (New York) | 4,225.79 mi (6,800.75 km) |
| Opatija to Ocoee (Florida) | 5,105.29 mi (8,216.16 km) |
| Opatija to Oconomowoc (Wisconsin) | 4,708.31 mi (7,577.29 km) |
| Opatija to Odenton (Maryland) | 4,420.31 mi (7,113.80 km) |
