| Spartanburg to Popovo | 5,391.26 mi (8,676.39 km) |
| Spartanburg to Provadia | 5,446.12 mi (8,764.68 km) |
| Spartanburg to Radnevo | 5,423.05 mi (8,727.55 km) |
| Spartanburg to Radomir | 5,290.26 mi (8,513.85 km) |
| Spartanburg to Rakitovo | 5,360.16 mi (8,626.34 km) |
| Spartanburg to Rakovski | 5,384.00 mi (8,664.71 km) |
| Spartanburg to Razgrad | 5,394.89 mi (8,682.24 km) |
| Spartanburg to Razlog | 5,338.60 mi (8,591.64 km) |
| Spartanburg to Ruse | 5,360.38 mi (8,626.70 km) |
| Spartanburg to Samokov | 5,323.91 mi (8,568.01 km) |
| Spartanburg to Sandanski | 5,343.65 mi (8,599.77 km) |
| Spartanburg to Sevlievo | 5,359.62 mi (8,625.47 km) |
| Spartanburg to Shumen | 5,422.00 mi (8,725.86 km) |
| Spartanburg to Silistra | 5,399.71 mi (8,689.99 km) |
| Spartanburg to Sliven | 5,423.20 mi (8,727.80 km) |
