| Louvain-la-Neuve to Olympia Heights (Florida) | 4,644.93 mi (7,475.29 km) |
| Louvain-la-Neuve to Omaha (Nebraska) | 4,490.02 mi (7,226.00 km) |
| Louvain-la-Neuve to On Top of the World Designated Place (Florida) | 4,557.81 mi (7,335.09 km) |
| Louvain-la-Neuve to Onalaska (Wisconsin) | 4,187.60 mi (6,739.28 km) |
| Louvain-la-Neuve to Oneida (New York) | 3,634.34 mi (5,848.91 km) |
| Louvain-la-Neuve to Oneonta (New York) | 3,637.23 mi (5,853.55 km) |
| Louvain-la-Neuve to Ontario (California) | 5,607.09 mi (9,023.74 km) |
| Louvain-la-Neuve to Ontario (Oregon) | 5,013.90 mi (8,069.09 km) |
| Louvain-la-Neuve to Opa-locka (Florida) | 4,632.52 mi (7,455.32 km) |
| Louvain-la-Neuve to Opelika (Alabama) | 4,508.75 mi (7,256.12 km) |
| Louvain-la-Neuve to Opelousas (Louisiana) | 4,885.88 mi (7,863.06 km) |
| Louvain-la-Neuve to Orange (California) | 5,627.46 mi (9,056.52 km) |
| Louvain-la-Neuve to Orange (Texas) | 4,973.13 mi (8,003.47 km) |
| Louvain-la-Neuve to Orange City (Florida) | 4,524.46 mi (7,281.42 km) |
| Louvain-la-Neuve to Orangeburg (South Carolina) | 4,283.56 mi (6,893.73 km) |
