| Sigmaringen to Odessa (Texas) | 5,483.54 mi (8,824.91 km) |
| Sigmaringen to Ogden (Utah) | 5,298.45 mi (8,527.03 km) |
| Sigmaringen to Oildale (California) | 5,844.02 mi (9,405.04 km) |
| Sigmaringen to Ojus (Florida) | 4,877.67 mi (7,849.85 km) |
| Sigmaringen to Okemos (Michigan) | 4,265.10 mi (6,864.02 km) |
| Sigmaringen to Oklahoma City (Oklahoma) | 5,114.79 mi (8,231.46 km) |
| Sigmaringen to Okmulgee (Oklahoma) | 5,050.59 mi (8,128.14 km) |
| Sigmaringen to Olathe (Kansas) | 4,840.76 mi (7,790.45 km) |
| Sigmaringen to Old Jamestown (Missouri) | 4,671.85 mi (7,518.62 km) |
| Sigmaringen to Oldsmar (Florida) | 4,884.81 mi (7,861.33 km) |
| Sigmaringen to Olean (New York) | 4,057.86 mi (6,530.49 km) |
| Sigmaringen to Olive Branch (Mississippi) | 4,844.29 mi (7,796.14 km) |
| Sigmaringen to Olivehurst (California) | 5,700.44 mi (9,173.97 km) |
| Sigmaringen to Olney (Maryland) | 4,130.36 mi (6,647.16 km) |
| Sigmaringen to Olympia (Washington) | 5,261.60 mi (8,467.73 km) |
