| Providence to Popovo | 4,651.33 mi (7,485.59 km) |
| Providence to Provadia | 4,706.40 mi (7,574.22 km) |
| Providence to Radnevo | 4,682.76 mi (7,536.17 km) |
| Providence to Radomir | 4,549.84 mi (7,322.27 km) |
| Providence to Rakitovo | 4,619.74 mi (7,434.76 km) |
| Providence to Rakovski | 4,643.62 mi (7,473.19 km) |
| Providence to Razgrad | 4,655.10 mi (7,491.66 km) |
| Providence to Razlog | 4,598.21 mi (7,400.10 km) |
| Providence to Ruse | 4,620.59 mi (7,436.12 km) |
| Providence to Samokov | 4,583.50 mi (7,376.43 km) |
| Providence to Sandanski | 4,603.31 mi (7,408.31 km) |
| Providence to Sevlievo | 4,619.39 mi (7,434.19 km) |
| Providence to Shumen | 4,682.20 mi (7,535.27 km) |
| Providence to Silistra | 4,660.44 mi (7,500.25 km) |
| Providence to Sliven | 4,683.06 mi (7,536.66 km) |
