| Herstal to Oakley (California) | 5,529.17 mi (8,898.34 km) |
| Herstal to Oakton (Virginia) | 3,930.60 mi (6,325.68 km) |
| Herstal to Oakville (Missouri) | 4,461.12 mi (7,179.47 km) |
| Herstal to Oatfield (Oregon) | 5,113.37 mi (8,229.17 km) |
| Herstal to Ocala (Florida) | 4,595.86 mi (7,396.32 km) |
| Herstal to Ocean Acres (New Jersey) | 3,769.65 mi (6,066.66 km) |
| Herstal to Ocean City (New Jersey) | 3,803.91 mi (6,121.80 km) |
| Herstal to Ocean Pines (Maryland) | 3,865.99 mi (6,221.71 km) |
| Herstal to Ocean Pointe (Hawaii) | 7,364.51 mi (11,852.03 km) |
| Herstal to Ocean Springs (Mississippi) | 4,805.50 mi (7,733.70 km) |
| Herstal to Oceanside (California) | 5,680.41 mi (9,141.74 km) |
| Herstal to Oceanside (New York) | 3,704.23 mi (5,961.39 km) |
| Herstal to Ocoee (Florida) | 4,599.98 mi (7,402.94 km) |
| Herstal to Oconomowoc (Wisconsin) | 4,167.63 mi (6,707.14 km) |
| Herstal to Odenton (Maryland) | 3,897.96 mi (6,273.16 km) |
