| Grand Rapids to Popovo | 5,138.44 mi (8,269.52 km) |
| Grand Rapids to Provadia | 5,188.97 mi (8,350.84 km) |
| Grand Rapids to Radnevo | 5,179.19 mi (8,335.10 km) |
| Grand Rapids to Radomir | 5,058.38 mi (8,140.67 km) |
| Grand Rapids to Rakitovo | 5,127.27 mi (8,251.55 km) |
| Grand Rapids to Rakovski | 5,144.75 mi (8,279.67 km) |
| Grand Rapids to Razgrad | 5,139.47 mi (8,271.17 km) |
| Grand Rapids to Razlog | 5,109.34 mi (8,222.69 km) |
| Grand Rapids to Ruse | 5,105.43 mi (8,216.40 km) |
| Grand Rapids to Samokov | 5,090.85 mi (8,192.93 km) |
| Grand Rapids to Sandanski | 5,117.62 mi (8,236.01 km) |
| Grand Rapids to Sevlievo | 5,114.29 mi (8,230.65 km) |
| Grand Rapids to Shumen | 5,166.45 mi (8,314.59 km) |
| Grand Rapids to Silistra | 5,136.75 mi (8,266.81 km) |
| Grand Rapids to Sliven | 5,174.71 mi (8,327.90 km) |
