| Cobh to Popovo | 1,693.55 mi (2,725.51 km) |
| Cobh to Provadia | 1,750.66 mi (2,817.42 km) |
| Cobh to Radnevo | 1,720.83 mi (2,769.41 km) |
| Cobh to Radomir | 1,585.72 mi (2,551.97 km) |
| Cobh to Rakitovo | 1,655.64 mi (2,664.49 km) |
| Cobh to Rakovski | 1,680.53 mi (2,704.56 km) |
| Cobh to Razgrad | 1,698.82 mi (2,733.99 km) |
| Cobh to Razlog | 1,633.91 mi (2,629.53 km) |
| Cobh to Ruse | 1,664.37 mi (2,678.54 km) |
| Cobh to Samokov | 1,619.45 mi (2,606.26 km) |
| Cobh to Sandanski | 1,639.08 mi (2,637.85 km) |
| Cobh to Sevlievo | 1,658.31 mi (2,668.79 km) |
| Cobh to Shumen | 1,725.72 mi (2,777.29 km) |
| Cobh to Silistra | 1,709.40 mi (2,751.01 km) |
| Cobh to Sliven | 1,722.90 mi (2,772.75 km) |
