| Sastamala to Oswego (Illinois) | 4,353.91 mi (7,006.94 km) |
| Sastamala to Oswego (New York) | 3,929.18 mi (6,323.40 km) |
| Sastamala to Otsego (Minnesota) | 4,269.76 mi (6,871.51 km) |
| Sastamala to Ottawa (Illinois) | 4,386.17 mi (7,058.86 km) |
| Sastamala to Ottawa (Kansas) | 4,715.89 mi (7,589.49 km) |
| Sastamala to Ottumwa (Iowa) | 4,497.58 mi (7,238.16 km) |
| Sastamala to Overland (Missouri) | 4,586.32 mi (7,380.97 km) |
| Sastamala to Overland Park (Kansas) | 4,684.03 mi (7,538.21 km) |
| Sastamala to Overlea (Maryland) | 4,164.65 mi (6,702.36 km) |
| Sastamala to Oviedo (Florida) | 4,935.85 mi (7,943.48 km) |
| Sastamala to Owasso (Oklahoma) | 4,872.52 mi (7,841.56 km) |
| Sastamala to Owatonna (Minnesota) | 4,331.43 mi (6,970.76 km) |
| Sastamala to Owensboro (Kentucky) | 4,556.99 mi (7,333.76 km) |
| Sastamala to Owings Mills (Maryland) | 4,169.87 mi (6,710.75 km) |
| Sastamala to Owosso (Michigan) | 4,166.82 mi (6,705.85 km) |
