| Muskegon to Popovo | 5,146.45 mi (8,282.41 km) |
| Muskegon to Provadia | 5,196.66 mi (8,363.22 km) |
| Muskegon to Radnevo | 5,187.75 mi (8,348.88 km) |
| Muskegon to Radomir | 5,067.79 mi (8,155.82 km) |
| Muskegon to Rakitovo | 5,136.58 mi (8,266.52 km) |
| Muskegon to Rakovski | 5,153.63 mi (8,293.97 km) |
| Muskegon to Razgrad | 5,147.30 mi (8,283.78 km) |
| Muskegon to Razlog | 5,118.89 mi (8,238.05 km) |
| Muskegon to Ruse | 5,113.32 mi (8,229.09 km) |
| Muskegon to Samokov | 5,100.16 mi (8,207.92 km) |
| Muskegon to Sandanski | 5,127.36 mi (8,251.70 km) |
| Muskegon to Sevlievo | 5,122.80 mi (8,244.35 km) |
| Muskegon to Shumen | 5,174.26 mi (8,327.16 km) |
| Muskegon to Silistra | 5,144.09 mi (8,278.62 km) |
| Muskegon to Sliven | 5,182.98 mi (8,341.20 km) |
