| Willimantic to Oakleaf Plantation (Florida) | 961.04 mi (1,546.64 km) |
| Willimantic to Oakley (California) | 2,601.09 mi (4,186.05 km) |
| Willimantic to Oakton (Virginia) | 331.76 mi (533.92 km) |
| Willimantic to Oakville (Missouri) | 981.57 mi (1,579.69 km) |
| Willimantic to Oatfield (Oregon) | 2,493.84 mi (4,013.44 km) |
| Willimantic to Ocala (Florida) | 1,029.65 mi (1,657.06 km) |
| Willimantic to Ocean Acres (New Jersey) | 174.17 mi (280.30 km) |
| Willimantic to Ocean City (New Jersey) | 210.72 mi (339.12 km) |
| Willimantic to Ocean Pines (Maryland) | 277.69 mi (446.90 km) |
| Willimantic to Ocean Pointe (Hawaii) | 5,042.86 mi (8,115.71 km) |
| Willimantic to Ocean Springs (Mississippi) | 1,207.58 mi (1,943.41 km) |
| Willimantic to Oceanside (California) | 2,511.61 mi (4,042.05 km) |
| Willimantic to Oceanside (New York) | 105.38 mi (169.59 km) |
| Willimantic to Ocoee (Florida) | 1,047.88 mi (1,686.40 km) |
| Willimantic to Oconomowoc (Wisconsin) | 834.84 mi (1,343.55 km) |
