| Penarth to Popovo | 1,471.90 mi (2,368.79 km) |
| Penarth to Provadia | 1,528.97 mi (2,460.64 km) |
| Penarth to Radnevo | 1,499.57 mi (2,413.33 km) |
| Penarth to Radomir | 1,365.40 mi (2,197.40 km) |
| Penarth to Rakitovo | 1,435.29 mi (2,309.88 km) |
| Penarth to Rakovski | 1,459.58 mi (2,348.96 km) |
| Penarth to Razgrad | 1,477.13 mi (2,377.21 km) |
| Penarth to Razlog | 1,413.99 mi (2,275.60 km) |
| Penarth to Ruse | 1,442.68 mi (2,321.76 km) |
| Penarth to Samokov | 1,399.04 mi (2,251.54 km) |
| Penarth to Sandanski | 1,419.63 mi (2,284.67 km) |
| Penarth to Sevlievo | 1,436.90 mi (2,312.47 km) |
| Penarth to Shumen | 1,504.04 mi (2,420.51 km) |
| Penarth to Silistra | 1,487.79 mi (2,394.36 km) |
| Penarth to Sliven | 1,501.40 mi (2,416.27 km) |
