| Seriate to Olympia Heights (Florida) | 4,970.90 mi (7,999.89 km) |
| Seriate to Omaha (Nebraska) | 4,890.58 mi (7,870.63 km) |
| Seriate to On Top of the World Designated Place (Florida) | 4,900.93 mi (7,887.28 km) |
| Seriate to Onalaska (Wisconsin) | 4,586.69 mi (7,381.57 km) |
| Seriate to Oneida (New York) | 4,008.07 mi (6,450.37 km) |
| Seriate to Oneonta (New York) | 4,007.83 mi (6,449.97 km) |
| Seriate to Ontario (California) | 6,022.32 mi (9,691.99 km) |
| Seriate to Ontario (Oregon) | 5,432.94 mi (8,743.47 km) |
| Seriate to Opa-locka (Florida) | 4,958.84 mi (7,980.49 km) |
| Seriate to Opelika (Alabama) | 4,870.65 mi (7,838.55 km) |
| Seriate to Opelousas (Louisiana) | 5,257.46 mi (8,461.06 km) |
| Seriate to Orange (California) | 6,042.71 mi (9,724.80 km) |
| Seriate to Orange (Texas) | 5,347.44 mi (8,605.88 km) |
| Seriate to Orange City (Florida) | 4,864.22 mi (7,828.21 km) |
| Seriate to Orangeburg (South Carolina) | 4,637.16 mi (7,462.78 km) |
