| Santa Monica to Popovo | 6,646.26 mi (10,696.12 km) |
| Santa Monica to Provadia | 6,685.06 mi (10,758.56 km) |
| Santa Monica to Radnevo | 6,702.40 mi (10,786.47 km) |
| Santa Monica to Radomir | 6,610.98 mi (10,639.35 km) |
| Santa Monica to Rakitovo | 6,674.33 mi (10,741.29 km) |
| Santa Monica to Rakovski | 6,678.79 mi (10,748.47 km) |
| Santa Monica to Razgrad | 6,641.97 mi (10,689.22 km) |
| Santa Monica to Razlog | 6,664.08 mi (10,724.80 km) |
| Santa Monica to Ruse | 6,610.88 mi (10,639.19 km) |
| Santa Monica to Samokov | 6,639.51 mi (10,685.26 km) |
| Santa Monica to Sandanski | 6,677.85 mi (10,746.96 km) |
| Santa Monica to Sevlievo | 6,638.28 mi (10,683.28 km) |
| Santa Monica to Shumen | 6,667.11 mi (10,729.68 km) |
| Santa Monica to Silistra | 6,624.00 mi (10,660.30 km) |
| Santa Monica to Sliven | 6,689.07 mi (10,765.02 km) |
