| Gennep to Oakley (California) | 5,483.22 mi (8,824.39 km) |
| Gennep to Oakton (Virginia) | 3,916.57 mi (6,303.10 km) |
| Gennep to Oakville (Missouri) | 4,437.58 mi (7,141.59 km) |
| Gennep to Oatfield (Oregon) | 5,063.16 mi (8,148.36 km) |
| Gennep to Ocala (Florida) | 4,587.70 mi (7,383.19 km) |
| Gennep to Ocean Acres (New Jersey) | 3,756.98 mi (6,046.28 km) |
| Gennep to Ocean City (New Jersey) | 3,791.55 mi (6,101.91 km) |
| Gennep to Ocean Pines (Maryland) | 3,854.21 mi (6,202.75 km) |
| Gennep to Ocean Pointe (Hawaii) | 7,299.67 mi (11,747.68 km) |
| Gennep to Ocean Springs (Mississippi) | 4,790.47 mi (7,709.51 km) |
| Gennep to Oceanside (California) | 5,640.19 mi (9,077.01 km) |
| Gennep to Oceanside (New York) | 3,691.01 mi (5,940.11 km) |
| Gennep to Ocoee (Florida) | 4,592.92 mi (7,391.59 km) |
| Gennep to Oconomowoc (Wisconsin) | 4,140.98 mi (6,664.26 km) |
| Gennep to Odenton (Maryland) | 3,884.20 mi (6,251.02 km) |
