| Calverton to Popovo | 4,996.55 mi (8,041.16 km) |
| Calverton to Provadia | 5,051.29 mi (8,129.27 km) |
| Calverton to Radnevo | 5,028.69 mi (8,092.89 km) |
| Calverton to Radomir | 4,896.45 mi (7,880.08 km) |
| Calverton to Rakitovo | 4,966.33 mi (7,992.54 km) |
| Calverton to Rakovski | 4,989.84 mi (8,030.37 km) |
| Calverton to Razgrad | 5,000.10 mi (8,046.89 km) |
| Calverton to Razlog | 4,944.98 mi (7,958.18 km) |
| Calverton to Ruse | 4,965.60 mi (7,991.36 km) |
| Calverton to Samokov | 4,930.06 mi (7,934.16 km) |
| Calverton to Sandanski | 4,950.24 mi (7,966.65 km) |
| Calverton to Sevlievo | 4,965.17 mi (7,990.67 km) |
| Calverton to Shumen | 5,027.21 mi (8,090.52 km) |
| Calverton to Silistra | 5,004.75 mi (8,054.37 km) |
| Calverton to Sliven | 5,028.65 mi (8,092.83 km) |
