| Plympton to Olympia Heights (Florida) | 4,279.05 mi (6,886.47 km) |
| Plympton to Omaha (Nebraska) | 4,185.17 mi (6,735.39 km) |
| Plympton to On Top of the World Designated Place (Florida) | 4,198.85 mi (6,757.40 km) |
| Plympton to Onalaska (Wisconsin) | 3,880.40 mi (6,244.90 km) |
| Plympton to Oneida (New York) | 3,295.49 mi (5,303.58 km) |
| Plympton to Oneonta (New York) | 3,295.61 mi (5,303.78 km) |
| Plympton to Ontario (California) | 5,340.02 mi (8,593.94 km) |
| Plympton to Ontario (Oregon) | 4,774.07 mi (7,683.12 km) |
| Plympton to Opa-locka (Florida) | 4,266.75 mi (6,866.68 km) |
| Plympton to Opelika (Alabama) | 4,160.69 mi (6,695.99 km) |
| Plympton to Opelousas (Louisiana) | 4,545.34 mi (7,315.02 km) |
| Plympton to Orange (California) | 5,360.45 mi (8,626.81 km) |
| Plympton to Orange (Texas) | 4,634.98 mi (7,459.27 km) |
| Plympton to Orange City (Florida) | 4,163.92 mi (6,701.19 km) |
| Plympton to Orangeburg (South Carolina) | 3,930.07 mi (6,324.83 km) |
