| Simi Valley to Popovo | 6,637.50 mi (10,682.02 km) |
| Simi Valley to Provadia | 6,676.04 mi (10,744.05 km) |
| Simi Valley to Radnevo | 6,693.90 mi (10,772.78 km) |
| Simi Valley to Radomir | 6,603.14 mi (10,626.73 km) |
| Simi Valley to Rakitovo | 6,666.32 mi (10,728.41 km) |
| Simi Valley to Rakovski | 6,670.52 mi (10,735.16 km) |
| Simi Valley to Razgrad | 6,633.11 mi (10,674.96 km) |
| Simi Valley to Razlog | 6,656.25 mi (10,712.19 km) |
| Simi Valley to Ruse | 6,602.10 mi (10,625.06 km) |
| Simi Valley to Samokov | 6,631.57 mi (10,672.47 km) |
| Simi Valley to Sandanski | 6,670.11 mi (10,734.51 km) |
| Simi Valley to Sevlievo | 6,629.84 mi (10,669.69 km) |
| Simi Valley to Shumen | 6,658.20 mi (10,715.33 km) |
| Simi Valley to Silistra | 6,614.86 mi (10,645.60 km) |
| Simi Valley to Sliven | 6,680.40 mi (10,751.07 km) |
