| Westerlo to Orangevale (California) | 5,432.65 mi (8,743.00 km) |
| Westerlo to Orchards (Washington) | 5,053.92 mi (8,133.50 km) |
| Westerlo to Orcutt (California) | 5,635.53 mi (9,069.51 km) |
| Westerlo to Oregon (Ohio) | 4,004.09 mi (6,443.95 km) |
| Westerlo to Oregon (Wisconsin) | 4,166.79 mi (6,705.80 km) |
| Westerlo to Oregon City (Oregon) | 5,075.96 mi (8,168.97 km) |
| Westerlo to Orem (Utah) | 5,059.52 mi (8,142.52 km) |
| Westerlo to Orinda (California) | 5,507.19 mi (8,862.96 km) |
| Westerlo to Orland Park (Illinois) | 4,173.51 mi (6,716.62 km) |
| Westerlo to Orlando (Florida) | 4,558.73 mi (7,336.57 km) |
| Westerlo to Ormond Beach (Florida) | 4,507.76 mi (7,254.53 km) |
| Westerlo to Oro Valley (Arizona) | 5,479.47 mi (8,818.36 km) |
| Westerlo to Oroville (California) | 5,394.12 mi (8,681.00 km) |
| Westerlo to Oshkosh (Wisconsin) | 4,084.53 mi (6,573.41 km) |
| Westerlo to Oskaloosa (Iowa) | 4,364.52 mi (7,024.02 km) |
