| Grugliasco to Oswego (Illinois) | 4,518.01 mi (7,271.04 km) |
| Grugliasco to Oswego (New York) | 3,961.20 mi (6,374.94 km) |
| Grugliasco to Otsego (Minnesota) | 4,561.70 mi (7,341.35 km) |
| Grugliasco to Ottawa (Illinois) | 4,551.94 mi (7,325.64 km) |
| Grugliasco to Ottawa (Kansas) | 4,933.11 mi (7,939.08 km) |
| Grugliasco to Ottumwa (Iowa) | 4,708.87 mi (7,578.20 km) |
| Grugliasco to Overland (Missouri) | 4,733.32 mi (7,617.55 km) |
| Grugliasco to Overland Park (Kansas) | 4,896.87 mi (7,880.76 km) |
| Grugliasco to Overlea (Maryland) | 4,121.84 mi (6,633.47 km) |
| Grugliasco to Oviedo (Florida) | 4,790.70 mi (7,709.88 km) |
| Grugliasco to Owasso (Oklahoma) | 5,066.13 mi (8,153.15 km) |
| Grugliasco to Owatonna (Minnesota) | 4,600.26 mi (7,403.40 km) |
| Grugliasco to Owensboro (Kentucky) | 4,641.90 mi (7,470.42 km) |
| Grugliasco to Owings Mills (Maryland) | 4,131.84 mi (6,649.55 km) |
| Grugliasco to Owosso (Michigan) | 4,295.00 mi (6,912.13 km) |
