| Grand Terrace to Popovo | 6,617.13 mi (10,649.24 km) |
| Grand Terrace to Provadia | 6,656.65 mi (10,712.85 km) |
| Grand Terrace to Radnevo | 6,672.53 mi (10,738.39 km) |
| Grand Terrace to Radomir | 6,579.27 mi (10,588.31 km) |
| Grand Terrace to Rakitovo | 6,643.05 mi (10,690.95 km) |
| Grand Terrace to Rakovski | 6,648.26 mi (10,699.34 km) |
| Grand Terrace to Razgrad | 6,613.13 mi (10,642.80 km) |
| Grand Terrace to Razlog | 6,632.34 mi (10,673.72 km) |
| Grand Terrace to Ruse | 6,581.81 mi (10,592.41 km) |
| Grand Terrace to Samokov | 6,608.07 mi (10,634.67 km) |
| Grand Terrace to Sandanski | 6,645.82 mi (10,695.41 km) |
| Grand Terrace to Sevlievo | 6,608.24 mi (10,634.93 km) |
| Grand Terrace to Shumen | 6,638.42 mi (10,683.51 km) |
| Grand Terrace to Silistra | 6,595.95 mi (10,615.16 km) |
| Grand Terrace to Sliven | 6,659.67 mi (10,717.70 km) |
