| Harper Woods to Popovo | 5,065.76 mi (8,152.55 km) |
| Harper Woods to Provadia | 5,117.39 mi (8,235.65 km) |
| Harper Woods to Radnevo | 5,104.49 mi (8,214.88 km) |
| Harper Woods to Radomir | 4,980.74 mi (8,015.72 km) |
| Harper Woods to Rakitovo | 5,049.98 mi (8,127.16 km) |
| Harper Woods to Rakovski | 5,068.93 mi (8,157.65 km) |
| Harper Woods to Razgrad | 5,067.40 mi (8,155.19 km) |
| Harper Woods to Razlog | 5,031.20 mi (8,096.93 km) |
| Harper Woods to Ruse | 5,033.19 mi (8,100.14 km) |
| Harper Woods to Samokov | 5,013.53 mi (8,068.50 km) |
| Harper Woods to Sandanski | 5,038.77 mi (8,109.12 km) |
| Harper Woods to Sevlievo | 5,039.82 mi (8,110.80 km) |
| Harper Woods to Shumen | 5,094.45 mi (8,198.73 km) |
| Harper Woods to Silistra | 5,066.47 mi (8,153.70 km) |
| Harper Woods to Sliven | 5,101.08 mi (8,209.39 km) |
