| Placentia to Oakleaf Plantation (Florida) | 2,114.85 mi (3,403.52 km) |
| Placentia to Oakley (California) | 356.11 mi (573.11 km) |
| Placentia to Oakton (Virginia) | 2,263.36 mi (3,642.53 km) |
| Placentia to Oakville (Missouri) | 1,561.88 mi (2,513.60 km) |
| Placentia to Oatfield (Oregon) | 835.30 mi (1,344.29 km) |
| Placentia to Ocala (Florida) | 2,116.99 mi (3,406.97 km) |
| Placentia to Ocean Acres (New Jersey) | 2,420.10 mi (3,894.77 km) |
| Placentia to Ocean City (New Jersey) | 2,405.68 mi (3,871.56 km) |
| Placentia to Ocean Pines (Maryland) | 2,382.12 mi (3,833.66 km) |
| Placentia to Ocean Pointe (Hawaii) | 2,589.45 mi (4,167.31 km) |
| Placentia to Ocean Springs (Mississippi) | 1,711.68 mi (2,754.68 km) |
| Placentia to Oceanside (California) | 55.19 mi (88.83 km) |
| Placentia to Oceanside (New York) | 2,449.77 mi (3,942.52 km) |
| Placentia to Ocoee (Florida) | 2,165.58 mi (3,485.17 km) |
| Placentia to Oconomowoc (Wisconsin) | 1,699.85 mi (2,735.64 km) |
