| San Ramon to Popovo | 6,487.98 mi (10,441.39 km) |
| San Ramon to Provadia | 6,523.29 mi (10,498.22 km) |
| San Ramon to Radnevo | 6,547.43 mi (10,537.08 km) |
| San Ramon to Radomir | 6,465.14 mi (10,404.64 km) |
| San Ramon to Rakitovo | 6,526.16 mi (10,502.84 km) |
| San Ramon to Rakovski | 6,527.02 mi (10,504.22 km) |
| San Ramon to Razgrad | 6,482.38 mi (10,432.38 km) |
| San Ramon to Razlog | 6,518.19 mi (10,490.01 km) |
| San Ramon to Ruse | 6,452.44 mi (10,384.19 km) |
| San Ramon to Samokov | 6,492.22 mi (10,448.22 km) |
| San Ramon to Sandanski | 6,533.33 mi (10,514.38 km) |
| San Ramon to Sevlievo | 6,484.32 mi (10,435.51 km) |
| San Ramon to Shumen | 6,506.73 mi (10,471.58 km) |
| San Ramon to Silistra | 6,460.79 mi (10,397.64 km) |
| San Ramon to Sliven | 6,531.94 mi (10,512.15 km) |
