| Merchtem to Olympia Heights (Florida) | 4,628.87 mi (7,449.45 km) |
| Merchtem to Omaha (Nebraska) | 4,468.56 mi (7,191.45 km) |
| Merchtem to On Top of the World Designated Place (Florida) | 4,540.60 mi (7,307.39 km) |
| Merchtem to Onalaska (Wisconsin) | 4,166.27 mi (6,704.96 km) |
| Merchtem to Oneida (New York) | 3,615.06 mi (5,817.88 km) |
| Merchtem to Oneonta (New York) | 3,618.18 mi (5,822.90 km) |
| Merchtem to Ontario (California) | 5,584.25 mi (8,986.97 km) |
| Merchtem to Ontario (Oregon) | 4,990.54 mi (8,031.51 km) |
| Merchtem to Opa-locka (Florida) | 4,616.44 mi (7,429.44 km) |
| Merchtem to Opelika (Alabama) | 4,490.22 mi (7,226.31 km) |
| Merchtem to Opelousas (Louisiana) | 4,866.61 mi (7,832.05 km) |
| Merchtem to Orange (California) | 5,604.61 mi (9,019.75 km) |
| Merchtem to Orange (Texas) | 4,953.65 mi (7,972.13 km) |
| Merchtem to Orange City (Florida) | 4,507.49 mi (7,254.10 km) |
| Merchtem to Orangeburg (South Carolina) | 4,265.66 mi (6,864.91 km) |
