| Felton to Popovo | 1,447.79 mi (2,329.99 km) |
| Felton to Provadia | 1,504.70 mi (2,421.59 km) |
| Felton to Radnevo | 1,475.99 mi (2,375.37 km) |
| Felton to Radomir | 1,342.46 mi (2,160.49 km) |
| Felton to Rakitovo | 1,412.33 mi (2,272.92 km) |
| Felton to Rakovski | 1,436.23 mi (2,311.39 km) |
| Felton to Razgrad | 1,452.89 mi (2,338.21 km) |
| Felton to Razlog | 1,391.26 mi (2,239.01 km) |
| Felton to Ruse | 1,418.42 mi (2,282.73 km) |
| Felton to Samokov | 1,376.04 mi (2,214.53 km) |
| Felton to Sandanski | 1,397.12 mi (2,248.44 km) |
| Felton to Sevlievo | 1,413.17 mi (2,274.28 km) |
| Felton to Shumen | 1,479.82 mi (2,381.54 km) |
| Felton to Silistra | 1,463.19 mi (2,354.78 km) |
| Felton to Sliven | 1,477.56 mi (2,377.90 km) |
