| Chalfont Saint Peter to Popovo | 1,364.75 mi (2,196.36 km) |
| Chalfont Saint Peter to Provadia | 1,421.24 mi (2,287.27 km) |
| Chalfont Saint Peter to Radnevo | 1,394.32 mi (2,243.93 km) |
| Chalfont Saint Peter to Radomir | 1,262.63 mi (2,032.01 km) |
| Chalfont Saint Peter to Rakitovo | 1,332.39 mi (2,144.27 km) |
| Chalfont Saint Peter to Rakovski | 1,355.22 mi (2,181.02 km) |
| Chalfont Saint Peter to Razgrad | 1,369.52 mi (2,204.03 km) |
| Chalfont Saint Peter to Razlog | 1,311.97 mi (2,111.41 km) |
| Chalfont Saint Peter to Ruse | 1,335.02 mi (2,148.51 km) |
| Chalfont Saint Peter to Samokov | 1,296.03 mi (2,085.76 km) |
| Chalfont Saint Peter to Sandanski | 1,318.46 mi (2,121.85 km) |
| Chalfont Saint Peter to Sevlievo | 1,331.15 mi (2,142.27 km) |
| Chalfont Saint Peter to Shumen | 1,396.50 mi (2,247.46 km) |
| Chalfont Saint Peter to Silistra | 1,378.92 mi (2,219.16 km) |
| Chalfont Saint Peter to Sliven | 1,395.20 mi (2,245.36 km) |
