| Addison to Oswego (Illinois) | 24.08 mi (38.76 km) |
| Addison to Oswego (New York) | 593.29 mi (954.81 km) |
| Addison to Otsego (Minnesota) | 363.06 mi (584.29 km) |
| Addison to Ottawa (Illinois) | 58.01 mi (93.35 km) |
| Addison to Ottawa (Kansas) | 446.19 mi (718.08 km) |
| Addison to Ottumwa (Iowa) | 236.80 mi (381.09 km) |
| Addison to Overland (Missouri) | 255.74 mi (411.57 km) |
| Addison to Overland Park (Kansas) | 409.32 mi (658.74 km) |
| Addison to Overlea (Maryland) | 627.40 mi (1,009.70 km) |
| Addison to Oviedo (Florida) | 993.64 mi (1,599.11 km) |
| Addison to Owasso (Oklahoma) | 572.19 mi (920.84 km) |
| Addison to Owatonna (Minnesota) | 303.06 mi (487.72 km) |
| Addison to Owensboro (Kentucky) | 292.23 mi (470.29 km) |
| Addison to Owings Mills (Maryland) | 612.54 mi (985.79 km) |
| Addison to Owosso (Michigan) | 208.70 mi (335.87 km) |
