| Altadena to Oswego (Illinois) | 1,694.39 mi (2,726.86 km) |
| Altadena to Oswego (New York) | 2,304.51 mi (3,708.76 km) |
| Altadena to Otsego (Minnesota) | 1,501.77 mi (2,416.87 km) |
| Altadena to Ottawa (Illinois) | 1,666.24 mi (2,681.56 km) |
| Altadena to Ottawa (Kansas) | 1,304.19 mi (2,098.90 km) |
| Altadena to Ottumwa (Iowa) | 1,478.13 mi (2,378.82 km) |
| Altadena to Overland (Missouri) | 1,567.97 mi (2,523.41 km) |
| Altadena to Overland Park (Kansas) | 1,337.34 mi (2,152.24 km) |
| Altadena to Overlea (Maryland) | 2,310.07 mi (3,717.70 km) |
| Altadena to Oviedo (Florida) | 2,199.49 mi (3,539.74 km) |
| Altadena to Owasso (Oklahoma) | 1,264.08 mi (2,034.35 km) |
| Altadena to Owatonna (Minnesota) | 1,491.36 mi (2,400.11 km) |
| Altadena to Owensboro (Kentucky) | 1,743.66 mi (2,806.15 km) |
| Altadena to Owings Mills (Maryland) | 2,295.25 mi (3,693.84 km) |
| Altadena to Owosso (Michigan) | 1,916.93 mi (3,085.00 km) |
