| Olivenza to Oswego (Illinois) | 4,125.06 mi (6,638.65 km) |
| Olivenza to Oswego (New York) | 3,524.10 mi (5,671.49 km) |
| Olivenza to Otsego (Minnesota) | 4,248.25 mi (6,836.90 km) |
| Olivenza to Ottawa (Illinois) | 4,157.86 mi (6,691.44 km) |
| Olivenza to Ottawa (Kansas) | 4,548.13 mi (7,319.51 km) |
| Olivenza to Ottumwa (Iowa) | 4,333.69 mi (6,974.40 km) |
| Olivenza to Overland (Missouri) | 4,316.34 mi (6,946.49 km) |
| Olivenza to Overland Park (Kansas) | 4,511.27 mi (7,260.19 km) |
| Olivenza to Overlea (Maryland) | 3,628.18 mi (5,838.99 km) |
| Olivenza to Oviedo (Florida) | 4,202.19 mi (6,762.77 km) |
| Olivenza to Owasso (Oklahoma) | 4,658.70 mi (7,497.46 km) |
| Olivenza to Owatonna (Minnesota) | 4,269.09 mi (6,870.43 km) |
| Olivenza to Owensboro (Kentucky) | 4,192.42 mi (6,747.05 km) |
| Olivenza to Owings Mills (Maryland) | 3,640.36 mi (5,858.60 km) |
| Olivenza to Owosso (Michigan) | 3,894.22 mi (6,267.15 km) |
