| Willimantic to Decatur (Alabama) | 940.65 mi (1,513.82 km) |
| Willimantic to Decatur (Georgia) | 857.21 mi (1,379.54 km) |
| Willimantic to Decatur (Illinois) | 882.80 mi (1,420.73 km) |
| Willimantic to Deer Park (New York) | 87.64 mi (141.04 km) |
| Willimantic to Deer Park (Texas) | 1,522.79 mi (2,450.69 km) |
| Willimantic to Deerfield (Illinois) | 803.28 mi (1,292.75 km) |
| Willimantic to Deerfield Beach (Florida) | 1,156.06 mi (1,860.50 km) |
| Willimantic to Defiance (Ohio) | 629.16 mi (1,012.54 km) |
| Willimantic to DeForest (Wisconsin) | 877.74 mi (1,412.59 km) |
| Willimantic to DeKalb (Illinois) | 850.25 mi (1,368.34 km) |
| Willimantic to Del Aire (California) | 2,544.96 mi (4,095.72 km) |
| Willimantic to Del City (Oklahoma) | 1,423.82 mi (2,291.42 km) |
| Willimantic to Del Rio (Texas) | 1,811.41 mi (2,915.19 km) |
| Willimantic to DeLand (Florida) | 1,013.87 mi (1,631.67 km) |
| Willimantic to Delano (California) | 2,536.86 mi (4,082.67 km) |
