| Caguas to Popovo | 5,472.18 mi (8,806.62 km) |
| Caguas to Provadia | 5,533.44 mi (8,905.22 km) |
| Caguas to Radnevo | 5,476.20 mi (8,813.09 km) |
| Caguas to Radomir | 5,324.38 mi (8,568.77 km) |
| Caguas to Rakitovo | 5,389.83 mi (8,674.10 km) |
| Caguas to Rakovski | 5,428.55 mi (8,736.40 km) |
| Caguas to Razgrad | 5,482.62 mi (8,823.43 km) |
| Caguas to Razlog | 5,360.67 mi (8,627.16 km) |
| Caguas to Ruse | 5,450.30 mi (8,771.41 km) |
| Caguas to Samokov | 5,357.80 mi (8,622.54 km) |
| Caguas to Sandanski | 5,356.48 mi (8,620.42 km) |
| Caguas to Sevlievo | 5,423.23 mi (8,727.85 km) |
| Caguas to Shumen | 5,507.34 mi (8,863.21 km) |
| Caguas to Silistra | 5,507.76 mi (8,863.88 km) |
| Caguas to Sliven | 5,489.01 mi (8,833.71 km) |
