| Covilha to Popovo | 1,737.97 mi (2,796.99 km) |
| Covilha to Provadia | 1,799.14 mi (2,895.43 km) |
| Covilha to Radnevo | 1,730.07 mi (2,784.27 km) |
| Covilha to Radomir | 1,576.96 mi (2,537.87 km) |
| Covilha to Rakitovo | 1,638.46 mi (2,636.84 km) |
| Covilha to Rakovski | 1,681.02 mi (2,705.33 km) |
| Covilha to Razgrad | 1,751.13 mi (2,818.18 km) |
| Covilha to Razlog | 1,607.75 mi (2,587.43 km) |
| Covilha to Ruse | 1,721.69 mi (2,770.79 km) |
| Covilha to Samokov | 1,609.00 mi (2,589.44 km) |
| Covilha to Sandanski | 1,600.90 mi (2,576.40 km) |
| Covilha to Sevlievo | 1,683.58 mi (2,709.46 km) |
| Covilha to Shumen | 1,773.43 mi (2,854.05 km) |
| Covilha to Silistra | 1,785.27 mi (2,873.11 km) |
| Covilha to Sliven | 1,747.34 mi (2,812.08 km) |
