| Prerov to Olympia Heights (Florida) | 5,216.26 mi (8,394.75 km) |
| Prerov to Omaha (Nebraska) | 4,986.05 mi (8,024.27 km) |
| Prerov to On Top of the World Designated Place (Florida) | 5,121.41 mi (8,242.11 km) |
| Prerov to Onalaska (Wisconsin) | 4,688.43 mi (7,545.30 km) |
| Prerov to Oneida (New York) | 4,176.57 mi (6,721.53 km) |
| Prerov to Oneonta (New York) | 4,182.64 mi (6,731.30 km) |
| Prerov to Ontario (California) | 6,043.78 mi (9,726.52 km) |
| Prerov to Ontario (Oregon) | 5,417.46 mi (8,718.56 km) |
| Prerov to Opa-locka (Florida) | 5,203.73 mi (8,374.60 km) |
| Prerov to Opelika (Alabama) | 5,059.44 mi (8,142.39 km) |
| Prerov to Opelousas (Louisiana) | 5,426.31 mi (8,732.80 km) |
| Prerov to Orange (California) | 6,063.90 mi (9,758.91 km) |
| Prerov to Orange (Texas) | 5,510.26 mi (8,867.91 km) |
| Prerov to Orange City (Florida) | 5,089.91 mi (8,191.42 km) |
| Prerov to Orangeburg (South Carolina) | 4,841.20 mi (7,791.15 km) |
