| Thetford to Popovo | 1,327.09 mi (2,135.74 km) |
| Thetford to Provadia | 1,382.28 mi (2,224.56 km) |
| Thetford to Radnevo | 1,360.15 mi (2,188.95 km) |
| Thetford to Radomir | 1,233.00 mi (1,984.32 km) |
| Thetford to Rakitovo | 1,302.36 mi (2,095.94 km) |
| Thetford to Rakovski | 1,322.72 mi (2,128.71 km) |
| Thetford to Razgrad | 1,330.90 mi (2,141.87 km) |
| Thetford to Razlog | 1,283.40 mi (2,065.42 km) |
| Thetford to Ruse | 1,296.38 mi (2,086.32 km) |
| Thetford to Samokov | 1,265.91 mi (2,037.29 km) |
| Thetford to Sandanski | 1,291.18 mi (2,077.95 km) |
| Thetford to Sevlievo | 1,296.21 mi (2,086.05 km) |
| Thetford to Shumen | 1,357.99 mi (2,185.47 km) |
| Thetford to Silistra | 1,337.56 mi (2,152.59 km) |
| Thetford to Sliven | 1,359.30 mi (2,187.58 km) |
