| Sierning to Oakley (California) | 5,906.37 mi (9,505.38 km) |
| Sierning to Oakton (Virginia) | 4,360.63 mi (7,017.75 km) |
| Sierning to Oakville (Missouri) | 4,886.35 mi (7,863.82 km) |
| Sierning to Oatfield (Oregon) | 5,474.04 mi (8,809.62 km) |
| Sierning to Ocala (Florida) | 5,025.17 mi (8,087.24 km) |
| Sierning to Ocean Acres (New Jersey) | 4,199.76 mi (6,758.86 km) |
| Sierning to Ocean City (New Jersey) | 4,234.03 mi (6,814.01 km) |
| Sierning to Ocean Pines (Maryland) | 4,296.08 mi (6,913.88 km) |
| Sierning to Ocean Pointe (Hawaii) | 7,621.05 mi (12,264.89 km) |
| Sierning to Ocean Springs (Mississippi) | 5,235.40 mi (8,425.56 km) |
| Sierning to Oceanside (California) | 6,075.73 mi (9,777.94 km) |
| Sierning to Oceanside (New York) | 4,134.33 mi (6,653.56 km) |
| Sierning to Ocoee (Florida) | 5,028.84 mi (8,093.14 km) |
| Sierning to Oconomowoc (Wisconsin) | 4,589.59 mi (7,386.22 km) |
| Sierning to Odenton (Maryland) | 4,328.02 mi (6,965.27 km) |
