| Ventspils to Olympia Heights (Florida) | 5,154.98 mi (8,296.15 km) |
| Ventspils to Omaha (Nebraska) | 4,727.76 mi (7,608.60 km) |
| Ventspils to On Top of the World Designated Place (Florida) | 5,024.83 mi (8,086.69 km) |
| Ventspils to Onalaska (Wisconsin) | 4,443.02 mi (7,150.35 km) |
| Ventspils to Oneida (New York) | 4,026.89 mi (6,480.66 km) |
| Ventspils to Oneonta (New York) | 4,041.34 mi (6,503.92 km) |
| Ventspils to Ontario (California) | 5,688.02 mi (9,153.98 km) |
| Ventspils to Ontario (Oregon) | 5,032.94 mi (8,099.74 km) |
| Ventspils to Opa-locka (Florida) | 5,141.97 mi (8,275.21 km) |
| Ventspils to Opelika (Alabama) | 4,919.18 mi (7,916.66 km) |
| Ventspils to Opelousas (Louisiana) | 5,252.43 mi (8,452.97 km) |
| Ventspils to Orange (California) | 5,707.61 mi (9,185.51 km) |
| Ventspils to Orange (Texas) | 5,326.94 mi (8,572.89 km) |
| Ventspils to Orange City (Florida) | 5,001.55 mi (8,049.21 km) |
| Ventspils to Orangeburg (South Carolina) | 4,726.40 mi (7,606.41 km) |
