| Longford to Oakley (California) | 4,981.42 mi (8,016.83 km) |
| Longford to Oakton (Virginia) | 3,325.67 mi (5,352.14 km) |
| Longford to Oakville (Missouri) | 3,857.62 mi (6,208.24 km) |
| Longford to Oatfield (Oregon) | 4,589.33 mi (7,385.82 km) |
| Longford to Ocala (Florida) | 3,995.91 mi (6,430.79 km) |
| Longford to Ocean Acres (New Jersey) | 3,165.48 mi (5,094.34 km) |
| Longford to Ocean City (New Jersey) | 3,199.95 mi (5,149.82 km) |
| Longford to Ocean Pines (Maryland) | 3,262.45 mi (5,250.41 km) |
| Longford to Ocean Pointe (Hawaii) | 6,956.52 mi (11,195.44 km) |
| Longford to Ocean Springs (Mississippi) | 4,200.20 mi (6,759.56 km) |
| Longford to Oceanside (California) | 5,109.50 mi (8,222.95 km) |
| Longford to Oceanside (New York) | 3,099.71 mi (4,988.51 km) |
| Longford to Ocoee (Florida) | 4,001.43 mi (6,439.67 km) |
| Longford to Oconomowoc (Wisconsin) | 3,567.45 mi (5,741.26 km) |
| Longford to Odenton (Maryland) | 3,293.16 mi (5,299.83 km) |
