| Sastamala to Olympia Heights (Florida) | 5,087.26 mi (8,187.15 km) |
| Sastamala to Omaha (Nebraska) | 4,571.32 mi (7,356.83 km) |
| Sastamala to On Top of the World Designated Place (Florida) | 4,941.41 mi (7,952.44 km) |
| Sastamala to Onalaska (Wisconsin) | 4,294.37 mi (6,911.13 km) |
| Sastamala to Oneida (New York) | 3,926.66 mi (6,319.35 km) |
| Sastamala to Oneonta (New York) | 3,944.97 mi (6,348.82 km) |
| Sastamala to Ontario (California) | 5,483.91 mi (8,825.50 km) |
| Sastamala to Ontario (Oregon) | 4,819.18 mi (7,755.73 km) |
| Sastamala to Opa-locka (Florida) | 5,074.12 mi (8,166.01 km) |
| Sastamala to Opelika (Alabama) | 4,816.03 mi (7,750.65 km) |
| Sastamala to Opelousas (Louisiana) | 5,131.29 mi (8,258.01 km) |
| Sastamala to Orange (California) | 5,503.21 mi (8,856.55 km) |
| Sastamala to Orange (Texas) | 5,200.97 mi (8,370.15 km) |
| Sastamala to Orange City (Florida) | 4,922.18 mi (7,921.49 km) |
| Sastamala to Orangeburg (South Carolina) | 4,636.71 mi (7,462.07 km) |
