| Sumperk to Olympia Heights (Florida) | 5,182.93 mi (8,341.11 km) |
| Sumperk to Omaha (Nebraska) | 4,946.26 mi (7,960.23 km) |
| Sumperk to On Top of the World Designated Place (Florida) | 5,086.59 mi (8,186.07 km) |
| Sumperk to Onalaska (Wisconsin) | 4,648.86 mi (7,481.61 km) |
| Sumperk to Oneida (New York) | 4,139.46 mi (6,661.81 km) |
| Sumperk to Oneonta (New York) | 4,145.81 mi (6,672.03 km) |
| Sumperk to Ontario (California) | 6,002.68 mi (9,660.37 km) |
| Sumperk to Ontario (Oregon) | 5,376.22 mi (8,652.18 km) |
| Sumperk to Opa-locka (Florida) | 5,170.37 mi (8,320.91 km) |
| Sumperk to Opelika (Alabama) | 5,022.99 mi (8,083.72 km) |
| Sumperk to Opelousas (Louisiana) | 5,388.86 mi (8,672.54 km) |
| Sumperk to Orange (California) | 6,022.80 mi (9,692.75 km) |
| Sumperk to Orange (Texas) | 5,472.55 mi (8,807.21 km) |
| Sumperk to Orange City (Florida) | 5,055.41 mi (8,135.89 km) |
| Sumperk to Orangeburg (South Carolina) | 4,805.57 mi (7,733.82 km) |
