| Cities | Distance |
|---|---|
| Frosinone to Popovo | 666.30 mi (1,072.30 km) |
| Frosinone to Provadia | 725.51 mi (1,167.60 km) |
| Frosinone to Radnevo | 647.49 mi (1,042.04 km) |
| Frosinone to Radomir | 496.00 mi (798.23 km) |
| Frosinone to Rakitovo | 552.94 mi (889.87 km) |
| Frosinone to Rakovski | 598.03 mi (962.43 km) |
| Frosinone to Razgrad | 681.80 mi (1,097.25 km) |
| Frosinone to Razlog | 521.41 mi (839.12 km) |
| Frosinone to Ruse | 656.64 mi (1,056.76 km) |
| Frosinone to Samokov | 526.06 mi (846.62 km) |
| Frosinone to Sandanski | 512.91 mi (825.45 km) |
| Frosinone to Sevlievo | 607.99 mi (978.47 km) |
| Frosinone to Shumen | 700.92 mi (1,128.01 km) |
| Frosinone to Silistra | 723.99 mi (1,165.14 km) |
| Frosinone to Sliven | 668.26 mi (1,075.46 km) |