| Waltham Abbey to Olympia Heights (Florida) | 4,439.96 mi (7,145.43 km) |
| Waltham Abbey to Omaha (Nebraska) | 4,288.97 mi (6,902.43 km) |
| Waltham Abbey to On Top of the World Designated Place (Florida) | 4,351.26 mi (7,002.67 km) |
| Waltham Abbey to Onalaska (Wisconsin) | 3,985.92 mi (6,414.72 km) |
| Waltham Abbey to Oneida (New York) | 3,427.57 mi (5,516.14 km) |
| Waltham Abbey to Oneonta (New York) | 3,430.27 mi (5,520.48 km) |
| Waltham Abbey to Ontario (California) | 5,416.75 mi (8,717.42 km) |
| Waltham Abbey to Ontario (Oregon) | 4,832.10 mi (7,776.52 km) |
| Waltham Abbey to Opa-locka (Florida) | 4,427.52 mi (7,125.40 km) |
| Waltham Abbey to Opelika (Alabama) | 4,301.58 mi (6,922.73 km) |
| Waltham Abbey to Opelousas (Louisiana) | 4,679.08 mi (7,530.25 km) |
| Waltham Abbey to Orange (California) | 5,437.15 mi (8,750.24 km) |
| Waltham Abbey to Orange (Texas) | 4,766.53 mi (7,671.00 km) |
| Waltham Abbey to Orange City (Florida) | 4,318.16 mi (6,949.41 km) |
| Waltham Abbey to Orangeburg (South Carolina) | 4,076.51 mi (6,560.51 km) |
