| Enfield to Olympia Heights (Florida) | 4,436.91 mi (7,140.51 km) |
| Enfield to Omaha (Nebraska) | 4,287.22 mi (6,899.62 km) |
| Enfield to On Top of the World Designated Place (Florida) | 4,348.40 mi (6,998.08 km) |
| Enfield to Onalaska (Wisconsin) | 3,984.12 mi (6,411.83 km) |
| Enfield to Oneida (New York) | 3,425.16 mi (5,512.27 km) |
| Enfield to Oneonta (New York) | 3,427.80 mi (5,516.51 km) |
| Enfield to Ontario (California) | 5,415.62 mi (8,715.60 km) |
| Enfield to Ontario (Oregon) | 4,831.37 mi (7,775.33 km) |
| Enfield to Opa-locka (Florida) | 4,424.46 mi (7,120.48 km) |
| Enfield to Opelika (Alabama) | 4,299.00 mi (6,918.56 km) |
| Enfield to Opelousas (Louisiana) | 4,676.66 mi (7,526.36 km) |
| Enfield to Orange (California) | 5,436.02 mi (8,748.43 km) |
| Enfield to Orange (Texas) | 4,764.17 mi (7,667.19 km) |
| Enfield to Orange City (Florida) | 4,315.26 mi (6,944.74 km) |
| Enfield to Orangeburg (South Carolina) | 4,073.79 mi (6,556.13 km) |
