| Willimantic to Popovo | 4,687.73 mi (7,544.18 km) |
| Willimantic to Provadia | 4,742.66 mi (7,632.57 km) |
| Willimantic to Radnevo | 4,719.52 mi (7,595.33 km) |
| Willimantic to Radomir | 4,587.00 mi (7,382.07 km) |
| Willimantic to Rakitovo | 4,656.89 mi (7,494.54 km) |
| Willimantic to Rakovski | 4,680.55 mi (7,532.61 km) |
| Willimantic to Razgrad | 4,691.41 mi (7,550.09 km) |
| Willimantic to Razlog | 4,635.48 mi (7,460.08 km) |
| Willimantic to Ruse | 4,656.90 mi (7,494.55 km) |
| Willimantic to Samokov | 4,620.63 mi (7,436.18 km) |
| Willimantic to Sandanski | 4,640.69 mi (7,468.47 km) |
| Willimantic to Sevlievo | 4,656.08 mi (7,493.23 km) |
| Willimantic to Shumen | 4,718.51 mi (7,593.71 km) |
| Willimantic to Silistra | 4,696.44 mi (7,558.19 km) |
| Willimantic to Sliven | 4,719.65 mi (7,595.54 km) |
