| Civitavecchia to Popovo | 736.73 mi (1,185.65 km) |
| Civitavecchia to Provadia | 796.91 mi (1,282.51 km) |
| Civitavecchia to Radnevo | 722.71 mi (1,163.09 km) |
| Civitavecchia to Radomir | 570.01 mi (917.35 km) |
| Civitavecchia to Rakitovo | 629.80 mi (1,013.56 km) |
| Civitavecchia to Rakovski | 673.39 mi (1,083.71 km) |
| Civitavecchia to Razgrad | 751.41 mi (1,209.28 km) |
| Civitavecchia to Razlog | 598.84 mi (963.74 km) |
| Civitavecchia to Ruse | 724.57 mi (1,166.08 km) |
| Civitavecchia to Samokov | 601.26 mi (967.64 km) |
| Civitavecchia to Sandanski | 591.80 mi (952.42 km) |
| Civitavecchia to Sevlievo | 679.80 mi (1,094.03 km) |
| Civitavecchia to Shumen | 771.80 mi (1,242.09 km) |
| Civitavecchia to Silistra | 790.99 mi (1,272.97 km) |
| Civitavecchia to Sliven | 741.80 mi (1,193.81 km) |
