| Conneaut to Oswego (Illinois) | 400.33 mi (644.27 km) |
| Conneaut to Oswego (New York) | 231.85 mi (373.13 km) |
| Conneaut to Otsego (Minnesota) | 691.66 mi (1,113.12 km) |
| Conneaut to Ottawa (Illinois) | 428.04 mi (688.86 km) |
| Conneaut to Ottawa (Kansas) | 807.00 mi (1,298.74 km) |
| Conneaut to Ottumwa (Iowa) | 616.17 mi (991.63 km) |
| Conneaut to Overland (Missouri) | 562.09 mi (904.60 km) |
| Conneaut to Overland Park (Kansas) | 770.90 mi (1,240.65 km) |
| Conneaut to Overlea (Maryland) | 276.47 mi (444.94 km) |
| Conneaut to Oviedo (Florida) | 917.49 mi (1,476.56 km) |
| Conneaut to Owasso (Oklahoma) | 904.56 mi (1,455.76 km) |
| Conneaut to Owatonna (Minnesota) | 656.28 mi (1,056.18 km) |
| Conneaut to Owensboro (Kentucky) | 451.10 mi (725.97 km) |
| Conneaut to Owings Mills (Maryland) | 263.40 mi (423.89 km) |
| Conneaut to Owosso (Michigan) | 198.11 mi (318.83 km) |
