| Carlow to Popovo | 1,646.26 mi (2,649.39 km) |
| Carlow to Provadia | 1,702.27 mi (2,739.54 km) |
| Carlow to Radnevo | 1,676.71 mi (2,698.41 km) |
| Carlow to Radomir | 1,545.32 mi (2,486.96 km) |
| Carlow to Rakitovo | 1,615.09 mi (2,599.23 km) |
| Carlow to Rakovski | 1,637.83 mi (2,635.83 km) |
| Carlow to Razgrad | 1,650.67 mi (2,656.50 km) |
| Carlow to Razlog | 1,594.60 mi (2,566.26 km) |
| Carlow to Ruse | 1,616.15 mi (2,600.95 km) |
| Carlow to Samokov | 1,578.73 mi (2,540.72 km) |
| Carlow to Sandanski | 1,600.95 mi (2,576.47 km) |
| Carlow to Sevlievo | 1,613.39 mi (2,596.50 km) |
| Carlow to Shumen | 1,677.70 mi (2,700.00 km) |
| Carlow to Silistra | 1,658.80 mi (2,669.58 km) |
| Carlow to Sliven | 1,677.24 mi (2,699.25 km) |
