| Zalec to Odessa (Texas) | 5,780.84 mi (9,303.36 km) |
| Zalec to Ogden (Utah) | 5,573.67 mi (8,969.96 km) |
| Zalec to Oildale (California) | 6,115.55 mi (9,842.03 km) |
| Zalec to Ojus (Florida) | 5,183.40 mi (8,341.87 km) |
| Zalec to Okemos (Michigan) | 4,565.98 mi (7,348.23 km) |
| Zalec to Oklahoma City (Oklahoma) | 5,413.11 mi (8,711.56 km) |
| Zalec to Okmulgee (Oklahoma) | 5,349.93 mi (8,609.88 km) |
| Zalec to Olathe (Kansas) | 5,138.16 mi (8,269.06 km) |
| Zalec to Old Jamestown (Missouri) | 4,972.47 mi (8,002.41 km) |
| Zalec to Oldsmar (Florida) | 5,191.42 mi (8,354.78 km) |
| Zalec to Olean (New York) | 4,361.98 mi (7,019.93 km) |
| Zalec to Olive Branch (Mississippi) | 5,147.79 mi (8,284.57 km) |
| Zalec to Olivehurst (California) | 5,962.52 mi (9,595.75 km) |
| Zalec to Olney (Maryland) | 4,436.27 mi (7,139.49 km) |
| Zalec to Olympia (Washington) | 5,509.37 mi (8,866.48 km) |
