| South Plainfield to Popovo | 4,826.35 mi (7,767.26 km) |
| South Plainfield to Provadia | 4,881.18 mi (7,855.50 km) |
| South Plainfield to Radnevo | 4,858.35 mi (7,818.75 km) |
| South Plainfield to Radomir | 4,726.01 mi (7,605.78 km) |
| South Plainfield to Rakitovo | 4,795.89 mi (7,718.24 km) |
| South Plainfield to Rakovski | 4,819.45 mi (7,756.16 km) |
| South Plainfield to Razgrad | 4,829.96 mi (7,773.07 km) |
| South Plainfield to Razlog | 4,774.52 mi (7,683.85 km) |
| South Plainfield to Ruse | 4,795.45 mi (7,717.54 km) |
| South Plainfield to Samokov | 4,759.62 mi (7,659.87 km) |
| South Plainfield to Sandanski | 4,779.77 mi (7,692.30 km) |
| South Plainfield to Sevlievo | 4,794.86 mi (7,716.58 km) |
| South Plainfield to Shumen | 4,857.07 mi (7,816.69 km) |
| South Plainfield to Silistra | 4,834.78 mi (7,780.83 km) |
| South Plainfield to Sliven | 4,858.38 mi (7,818.80 km) |
