| Trnava to Olympia Heights (Florida) | 5,251.05 mi (8,450.75 km) |
| Trnava to Omaha (Nebraska) | 5,042.08 mi (8,114.44 km) |
| Trnava to On Top of the World Designated Place (Florida) | 5,160.37 mi (8,304.81 km) |
| Trnava to Onalaska (Wisconsin) | 4,743.53 mi (7,633.98 km) |
| Trnava to Oneida (New York) | 4,222.68 mi (6,795.75 km) |
| Trnava to Oneonta (New York) | 4,227.86 mi (6,804.09 km) |
| Trnava to Ontario (California) | 6,107.84 mi (9,829.61 km) |
| Trnava to Ontario (Oregon) | 5,484.22 mi (8,826.00 km) |
| Trnava to Opa-locka (Florida) | 5,238.60 mi (8,430.71 km) |
| Trnava to Opelika (Alabama) | 5,103.32 mi (8,213.00 km) |
| Trnava to Opelousas (Louisiana) | 5,473.34 mi (8,808.48 km) |
| Trnava to Orange (California) | 6,127.99 mi (9,862.05 km) |
| Trnava to Orange (Texas) | 5,558.19 mi (8,945.04 km) |
| Trnava to Orange City (Florida) | 5,127.99 mi (8,252.71 km) |
| Trnava to Orangeburg (South Carolina) | 4,882.58 mi (7,857.76 km) |
