| Koropi to Oswego (Illinois) | 5,478.80 mi (8,817.27 km) |
| Koropi to Oswego (New York) | 4,931.76 mi (7,936.90 km) |
| Koropi to Otsego (Minnesota) | 5,501.95 mi (8,854.53 km) |
| Koropi to Ottawa (Illinois) | 5,512.75 mi (8,871.91 km) |
| Koropi to Ottawa (Kansas) | 5,889.55 mi (9,478.32 km) |
| Koropi to Ottumwa (Iowa) | 5,664.52 mi (9,116.16 km) |
| Koropi to Overland (Missouri) | 5,697.58 mi (9,169.37 km) |
| Koropi to Overland Park (Kansas) | 5,853.69 mi (9,420.61 km) |
| Koropi to Overlea (Maryland) | 5,096.67 mi (8,202.30 km) |
| Koropi to Oviedo (Florida) | 5,763.40 mi (9,275.30 km) |
| Koropi to Owasso (Oklahoma) | 6,026.79 mi (9,699.17 km) |
| Koropi to Owatonna (Minnesota) | 5,545.33 mi (8,924.34 km) |
| Koropi to Owensboro (Kentucky) | 5,611.66 mi (9,031.09 km) |
| Koropi to Owings Mills (Maryland) | 5,106.55 mi (8,218.20 km) |
| Koropi to Owosso (Michigan) | 5,258.57 mi (8,462.86 km) |
