| Peniche to Oswego (Illinois) | 3,997.02 mi (6,432.59 km) |
| Peniche to Oswego (New York) | 3,395.29 mi (5,464.19 km) |
| Peniche to Otsego (Minnesota) | 4,123.08 mi (6,635.46 km) |
| Peniche to Ottawa (Illinois) | 4,029.77 mi (6,485.28 km) |
| Peniche to Ottawa (Kansas) | 4,420.03 mi (7,113.34 km) |
| Peniche to Ottumwa (Iowa) | 4,206.04 mi (6,768.97 km) |
| Peniche to Overland (Missouri) | 4,187.53 mi (6,739.18 km) |
| Peniche to Overland Park (Kansas) | 4,383.17 mi (7,054.03 km) |
| Peniche to Overlea (Maryland) | 3,498.33 mi (5,630.03 km) |
| Peniche to Oviedo (Florida) | 4,073.04 mi (6,554.93 km) |
| Peniche to Owasso (Oklahoma) | 4,529.93 mi (7,290.22 km) |
| Peniche to Owatonna (Minnesota) | 4,143.13 mi (6,667.73 km) |
| Peniche to Owensboro (Kentucky) | 4,063.00 mi (6,538.77 km) |
| Peniche to Owings Mills (Maryland) | 3,510.54 mi (5,649.67 km) |
| Peniche to Owosso (Michigan) | 3,766.13 mi (6,061.00 km) |
