| Vacaville to Popovo | 6,450.58 mi (10,381.21 km) |
| Vacaville to Provadia | 6,485.67 mi (10,437.68 km) |
| Vacaville to Radnevo | 6,510.24 mi (10,477.21 km) |
| Vacaville to Radomir | 6,428.55 mi (10,345.74 km) |
| Vacaville to Rakitovo | 6,489.40 mi (10,443.68 km) |
| Vacaville to Rakovski | 6,490.02 mi (10,444.68 km) |
| Vacaville to Razgrad | 6,444.90 mi (10,372.07 km) |
| Vacaville to Razlog | 6,481.58 mi (10,431.09 km) |
| Vacaville to Ruse | 6,415.04 mi (10,324.01 km) |
| Vacaville to Samokov | 6,455.53 mi (10,389.16 km) |
| Vacaville to Sandanski | 6,496.81 mi (10,455.60 km) |
| Vacaville to Sevlievo | 6,447.20 mi (10,375.76 km) |
| Vacaville to Shumen | 6,469.21 mi (10,411.18 km) |
| Vacaville to Silistra | 6,423.10 mi (10,336.98 km) |
| Vacaville to Sliven | 6,494.61 mi (10,452.07 km) |
