| Efringen-Kirchen to Oakley (California) | 5,746.10 mi (9,247.45 km) |
| Efringen-Kirchen to Oakton (Virginia) | 4,095.48 mi (6,591.04 km) |
| Efringen-Kirchen to Oakville (Missouri) | 4,644.41 mi (7,474.45 km) |
| Efringen-Kirchen to Oatfield (Oregon) | 5,334.51 mi (8,585.06 km) |
| Efringen-Kirchen to Ocala (Florida) | 4,746.76 mi (7,639.17 km) |
| Efringen-Kirchen to Ocean Acres (New Jersey) | 3,931.87 mi (6,327.74 km) |
| Efringen-Kirchen to Ocean City (New Jersey) | 3,965.43 mi (6,381.74 km) |
| Efringen-Kirchen to Ocean Pines (Maryland) | 4,026.14 mi (6,479.44 km) |
| Efringen-Kirchen to Ocean Pointe (Hawaii) | 7,588.08 mi (12,211.83 km) |
| Efringen-Kirchen to Ocean Springs (Mississippi) | 4,971.31 mi (8,000.56 km) |
| Efringen-Kirchen to Oceanside (California) | 5,890.25 mi (9,479.45 km) |
| Efringen-Kirchen to Oceanside (New York) | 3,867.76 mi (6,224.56 km) |
| Efringen-Kirchen to Ocoee (Florida) | 4,748.30 mi (7,641.66 km) |
| Efringen-Kirchen to Oconomowoc (Wisconsin) | 4,356.91 mi (7,011.77 km) |
| Efringen-Kirchen to Odenton (Maryland) | 4,062.31 mi (6,537.65 km) |
