| Rock Ferry to Popovo | 1,495.87 mi (2,407.38 km) |
| Rock Ferry to Provadia | 1,550.67 mi (2,495.56 km) |
| Rock Ferry to Radnevo | 1,529.62 mi (2,461.68 km) |
| Rock Ferry to Radomir | 1,402.79 mi (2,257.57 km) |
| Rock Ferry to Rakitovo | 1,472.15 mi (2,369.19 km) |
| Rock Ferry to Rakovski | 1,492.38 mi (2,401.76 km) |
| Rock Ferry to Razgrad | 1,499.42 mi (2,413.08 km) |
| Rock Ferry to Razlog | 1,453.17 mi (2,338.65 km) |
| Rock Ferry to Ruse | 1,464.91 mi (2,357.54 km) |
| Rock Ferry to Samokov | 1,435.70 mi (2,310.54 km) |
| Rock Ferry to Sandanski | 1,460.88 mi (2,351.06 km) |
| Rock Ferry to Sevlievo | 1,465.58 mi (2,358.62 km) |
| Rock Ferry to Shumen | 1,526.52 mi (2,456.70 km) |
| Rock Ferry to Silistra | 1,505.13 mi (2,422.28 km) |
| Rock Ferry to Sliven | 1,528.48 mi (2,459.84 km) |
