| Herstal to Orangevale (California) | 5,474.75 mi (8,810.77 km) |
| Herstal to Orchards (Washington) | 5,095.44 mi (8,200.32 km) |
| Herstal to Orcutt (California) | 5,677.85 mi (9,137.61 km) |
| Herstal to Oregon (Ohio) | 4,045.28 mi (6,510.26 km) |
| Herstal to Oregon (Wisconsin) | 4,208.68 mi (6,773.22 km) |
| Herstal to Oregon City (Oregon) | 5,117.51 mi (8,235.83 km) |
| Herstal to Orem (Utah) | 5,101.97 mi (8,210.83 km) |
| Herstal to Orinda (California) | 5,549.27 mi (8,930.69 km) |
| Herstal to Orland Park (Illinois) | 4,215.14 mi (6,783.61 km) |
| Herstal to Orlando (Florida) | 4,596.87 mi (7,397.95 km) |
| Herstal to Ormond Beach (Florida) | 4,546.05 mi (7,316.16 km) |
| Herstal to Oro Valley (Arizona) | 5,521.90 mi (8,886.64 km) |
| Herstal to Oroville (California) | 5,436.16 mi (8,748.66 km) |
| Herstal to Oshkosh (Wisconsin) | 4,126.47 mi (6,640.92 km) |
| Herstal to Oskaloosa (Iowa) | 4,406.49 mi (7,091.56 km) |
