| Ourem to Oswego (Illinois) | 4,023.53 mi (6,475.24 km) |
| Ourem to Oswego (New York) | 3,423.33 mi (5,509.31 km) |
| Ourem to Otsego (Minnesota) | 4,145.51 mi (6,671.55 km) |
| Ourem to Ottawa (Illinois) | 4,056.37 mi (6,528.10 km) |
| Ourem to Ottawa (Kansas) | 4,446.64 mi (7,156.17 km) |
| Ourem to Ottumwa (Iowa) | 4,231.88 mi (6,810.54 km) |
| Ourem to Overland (Missouri) | 4,215.54 mi (6,784.26 km) |
| Ourem to Overland Park (Kansas) | 4,409.77 mi (7,096.84 km) |
| Ourem to Overlea (Maryland) | 3,529.57 mi (5,680.29 km) |
| Ourem to Oviedo (Florida) | 4,109.71 mi (6,613.94 km) |
| Ourem to Owasso (Oklahoma) | 4,557.84 mi (7,335.13 km) |
| Ourem to Owatonna (Minnesota) | 4,166.54 mi (6,705.40 km) |
| Ourem to Owensboro (Kentucky) | 4,092.57 mi (6,586.35 km) |
| Ourem to Owings Mills (Maryland) | 3,541.67 mi (5,699.77 km) |
| Ourem to Owosso (Michigan) | 3,792.74 mi (6,103.82 km) |
