| Mortsel to Oswego (Illinois) | 4,167.87 mi (6,707.54 km) |
| Mortsel to Oswego (New York) | 3,635.18 mi (5,850.25 km) |
| Mortsel to Otsego (Minnesota) | 4,185.32 mi (6,735.62 km) |
| Mortsel to Ottawa (Illinois) | 4,201.80 mi (6,762.14 km) |
| Mortsel to Ottawa (Kansas) | 4,575.66 mi (7,363.81 km) |
| Mortsel to Ottumwa (Iowa) | 4,350.45 mi (7,001.38 km) |
| Mortsel to Overland (Missouri) | 4,389.38 mi (7,064.02 km) |
| Mortsel to Overland Park (Kansas) | 4,540.01 mi (7,306.43 km) |
| Mortsel to Overlea (Maryland) | 3,817.23 mi (6,143.24 km) |
| Mortsel to Oviedo (Florida) | 4,523.07 mi (7,279.17 km) |
| Mortsel to Owasso (Oklahoma) | 4,715.12 mi (7,588.25 km) |
| Mortsel to Owatonna (Minnesota) | 4,228.82 mi (6,805.63 km) |
| Mortsel to Owensboro (Kentucky) | 4,311.50 mi (6,938.69 km) |
| Mortsel to Owings Mills (Maryland) | 3,826.10 mi (6,157.51 km) |
| Mortsel to Owosso (Michigan) | 3,950.40 mi (6,357.55 km) |
