| Forest Park to Popovo | 5,278.62 mi (8,495.12 km) |
| Forest Park to Provadia | 5,331.06 mi (8,579.52 km) |
| Forest Park to Radnevo | 5,315.73 mi (8,554.85 km) |
| Forest Park to Radomir | 5,189.63 mi (8,351.90 km) |
| Forest Park to Rakitovo | 5,259.11 mi (8,463.73 km) |
| Forest Park to Rakovski | 5,279.29 mi (8,496.19 km) |
| Forest Park to Razgrad | 5,280.73 mi (8,498.52 km) |
| Forest Park to Razlog | 5,239.62 mi (8,432.35 km) |
| Forest Park to Ruse | 5,246.42 mi (8,443.30 km) |
| Forest Park to Samokov | 5,222.67 mi (8,405.08 km) |
| Forest Park to Sandanski | 5,246.57 mi (8,443.53 km) |
| Forest Park to Sevlievo | 5,251.29 mi (8,451.14 km) |
| Forest Park to Shumen | 5,307.83 mi (8,542.12 km) |
| Forest Park to Silistra | 5,281.14 mi (8,499.17 km) |
| Forest Park to Sliven | 5,313.18 mi (8,550.73 km) |
