| Knittelfeld to Olympia Heights (Florida) | 5,163.13 mi (8,309.25 km) |
| Knittelfeld to Omaha (Nebraska) | 5,003.80 mi (8,052.83 km) |
| Knittelfeld to On Top of the World Designated Place (Florida) | 5,080.60 mi (8,176.44 km) |
| Knittelfeld to Onalaska (Wisconsin) | 4,702.86 mi (7,568.52 km) |
| Knittelfeld to Oneida (New York) | 4,159.36 mi (6,693.84 km) |
| Knittelfeld to Oneonta (New York) | 4,162.46 mi (6,698.83 km) |
| Knittelfeld to Ontario (California) | 6,095.60 mi (9,809.92 km) |
| Knittelfeld to Ontario (Oregon) | 5,483.85 mi (8,825.41 km) |
| Knittelfeld to Opa-locka (Florida) | 5,150.83 mi (8,289.45 km) |
| Knittelfeld to Opelika (Alabama) | 5,034.00 mi (8,101.44 km) |
| Knittelfeld to Opelousas (Louisiana) | 5,410.91 mi (8,708.01 km) |
| Knittelfeld to Orange (California) | 6,115.87 mi (9,842.54 km) |
| Knittelfeld to Orange (Texas) | 5,497.83 mi (8,847.91 km) |
| Knittelfeld to Orange City (Florida) | 5,046.49 mi (8,121.54 km) |
| Knittelfeld to Orangeburg (South Carolina) | 4,808.07 mi (7,737.84 km) |
