| Krnov to Olympia Heights (Florida) | 5,209.44 mi (8,383.78 km) |
| Krnov to Omaha (Nebraska) | 4,963.79 mi (7,988.44 km) |
| Krnov to On Top of the World Designated Place (Florida) | 5,111.75 mi (8,226.56 km) |
| Krnov to Onalaska (Wisconsin) | 4,666.95 mi (7,510.72 km) |
| Krnov to Oneida (New York) | 4,161.97 mi (6,698.05 km) |
| Krnov to Oneonta (New York) | 4,168.70 mi (6,708.87 km) |
| Krnov to Ontario (California) | 6,014.65 mi (9,679.64 km) |
| Krnov to Ontario (Oregon) | 5,385.86 mi (8,667.70 km) |
| Krnov to Opa-locka (Florida) | 5,196.87 mi (8,363.55 km) |
| Krnov to Opelika (Alabama) | 5,046.33 mi (8,121.28 km) |
| Krnov to Opelousas (Louisiana) | 5,410.86 mi (8,707.93 km) |
| Krnov to Orange (California) | 6,034.74 mi (9,711.97 km) |
| Krnov to Orange (Texas) | 5,494.13 mi (8,841.95 km) |
| Krnov to Orange City (Florida) | 5,080.87 mi (8,176.87 km) |
| Krnov to Orangeburg (South Carolina) | 4,829.89 mi (7,772.95 km) |
