| Mortsel to Oakley (California) | 5,470.06 mi (8,803.21 km) |
| Mortsel to Oakton (Virginia) | 3,870.49 mi (6,228.95 km) |
| Mortsel to Oakville (Missouri) | 4,399.84 mi (7,080.86 km) |
| Mortsel to Oatfield (Oregon) | 5,055.77 mi (8,136.47 km) |
| Mortsel to Ocala (Florida) | 4,537.02 mi (7,301.63 km) |
| Mortsel to Ocean Acres (New Jersey) | 3,709.79 mi (5,970.32 km) |
| Mortsel to Ocean City (New Jersey) | 3,744.11 mi (6,025.56 km) |
| Mortsel to Ocean Pines (Maryland) | 3,806.31 mi (6,125.66 km) |
| Mortsel to Ocean Pointe (Hawaii) | 7,317.02 mi (11,775.60 km) |
| Mortsel to Ocean Springs (Mississippi) | 4,745.24 mi (7,636.72 km) |
| Mortsel to Oceanside (California) | 5,619.94 mi (9,044.42 km) |
| Mortsel to Oceanside (New York) | 3,644.26 mi (5,864.87 km) |
| Mortsel to Ocoee (Florida) | 4,541.42 mi (7,308.70 km) |
| Mortsel to Oconomowoc (Wisconsin) | 4,106.20 mi (6,608.30 km) |
| Mortsel to Odenton (Maryland) | 3,837.90 mi (6,176.50 km) |
