| Penacova to Olympia Heights (Florida) | 4,180.52 mi (6,727.90 km) |
| Penacova to Omaha (Nebraska) | 4,376.66 mi (7,043.56 km) |
| Penacova to On Top of the World Designated Place (Florida) | 4,154.09 mi (6,685.37 km) |
| Penacova to Onalaska (Wisconsin) | 4,072.73 mi (6,554.43 km) |
| Penacova to Oneida (New York) | 3,386.70 mi (5,450.37 km) |
| Penacova to Oneonta (New York) | 3,374.09 mi (5,430.07 km) |
| Penacova to Ontario (California) | 5,611.86 mi (9,031.41 km) |
| Penacova to Ontario (Oregon) | 5,122.08 mi (8,243.19 km) |
| Penacova to Opa-locka (Florida) | 4,169.49 mi (6,710.14 km) |
| Penacova to Opelika (Alabama) | 4,180.63 mi (6,728.07 km) |
| Penacova to Opelousas (Louisiana) | 4,592.24 mi (7,390.50 km) |
| Penacova to Orange (California) | 5,632.00 mi (9,063.83 km) |
| Penacova to Orange (Texas) | 4,690.53 mi (7,548.68 km) |
| Penacova to Orange City (Florida) | 4,109.32 mi (6,613.31 km) |
| Penacova to Orangeburg (South Carolina) | 3,926.42 mi (6,318.96 km) |
