| Weymouth to Olympia Heights (Florida) | 4,346.32 mi (6,994.72 km) |
| Weymouth to Omaha (Nebraska) | 4,237.30 mi (6,819.28 km) |
| Weymouth to On Top of the World Designated Place (Florida) | 4,264.15 mi (6,862.49 km) |
| Weymouth to Onalaska (Wisconsin) | 3,932.96 mi (6,329.49 km) |
| Weymouth to Oneida (New York) | 3,355.43 mi (5,400.04 km) |
| Weymouth to Oneonta (New York) | 3,356.25 mi (5,401.36 km) |
| Weymouth to Ontario (California) | 5,384.22 mi (8,665.06 km) |
| Weymouth to Ontario (Oregon) | 4,812.19 mi (7,744.48 km) |
| Weymouth to Opa-locka (Florida) | 4,333.98 mi (6,974.87 km) |
| Weymouth to Opelika (Alabama) | 4,223.13 mi (6,796.47 km) |
| Weymouth to Opelousas (Louisiana) | 4,605.96 mi (7,412.58 km) |
| Weymouth to Orange (California) | 5,404.64 mi (8,697.93 km) |
| Weymouth to Orange (Texas) | 4,695.03 mi (7,555.92 km) |
| Weymouth to Orange City (Florida) | 4,229.66 mi (6,806.97 km) |
| Weymouth to Orangeburg (South Carolina) | 3,993.88 mi (6,427.52 km) |
