| Katowice to Olympia Heights (Florida) | 5,258.22 mi (8,462.29 km) |
| Katowice to Omaha (Nebraska) | 4,997.29 mi (8,042.36 km) |
| Katowice to On Top of the World Designated Place (Florida) | 5,158.26 mi (8,301.41 km) |
| Katowice to Onalaska (Wisconsin) | 4,701.45 mi (7,566.26 km) |
| Katowice to Oneida (New York) | 4,204.12 mi (6,765.87 km) |
| Katowice to Oneonta (New York) | 4,211.47 mi (6,777.71 km) |
| Katowice to Ontario (California) | 6,038.34 mi (9,717.77 km) |
| Katowice to Ontario (Oregon) | 5,405.57 mi (8,699.42 km) |
| Katowice to Opa-locka (Florida) | 5,245.61 mi (8,442.00 km) |
| Katowice to Opelika (Alabama) | 5,089.77 mi (8,191.19 km) |
| Katowice to Opelousas (Louisiana) | 5,451.97 mi (8,774.10 km) |
| Katowice to Orange (California) | 6,058.38 mi (9,750.02 km) |
| Katowice to Orange (Texas) | 5,534.55 mi (8,907.00 km) |
| Katowice to Orange City (Florida) | 5,127.90 mi (8,252.55 km) |
| Katowice to Orangeburg (South Carolina) | 4,875.00 mi (7,845.56 km) |
