| Solana Beach to Popovo | 6,680.25 mi (10,750.82 km) |
| Solana Beach to Provadia | 6,720.17 mi (10,815.07 km) |
| Solana Beach to Radnevo | 6,735.21 mi (10,839.27 km) |
| Solana Beach to Radomir | 6,640.85 mi (10,687.41 km) |
| Solana Beach to Rakitovo | 6,704.89 mi (10,790.48 km) |
| Solana Beach to Rakovski | 6,710.55 mi (10,799.59 km) |
| Solana Beach to Razgrad | 6,676.40 mi (10,744.63 km) |
| Solana Beach to Razlog | 6,693.90 mi (10,772.79 km) |
| Solana Beach to Ruse | 6,644.96 mi (10,694.04 km) |
| Solana Beach to Samokov | 6,669.82 mi (10,734.04 km) |
| Solana Beach to Sandanski | 6,707.19 mi (10,794.18 km) |
| Solana Beach to Sevlievo | 6,670.82 mi (10,735.65 km) |
| Solana Beach to Shumen | 6,701.78 mi (10,785.47 km) |
| Solana Beach to Silistra | 6,659.67 mi (10,717.70 km) |
| Solana Beach to Sliven | 6,722.62 mi (10,819.01 km) |
