| Rio Rico to Popovo | 6,600.93 mi (10,623.17 km) |
| Rio Rico to Provadia | 6,645.10 mi (10,694.25 km) |
| Rio Rico to Radnevo | 6,650.96 mi (10,703.68 km) |
| Rio Rico to Radomir | 6,545.69 mi (10,534.28 km) |
| Rio Rico to Rakitovo | 6,612.08 mi (10,641.12 km) |
| Rio Rico to Rakovski | 6,622.37 mi (10,657.68 km) |
| Rio Rico to Razgrad | 6,598.87 mi (10,619.85 km) |
| Rio Rico to Razlog | 6,598.29 mi (10,618.92 km) |
| Rio Rico to Ruse | 6,566.22 mi (10,567.32 km) |
| Rio Rico to Samokov | 6,576.24 mi (10,583.44 km) |
| Rio Rico to Sandanski | 6,609.68 mi (10,637.25 km) |
| Rio Rico to Sevlievo | 6,585.90 mi (10,598.98 km) |
| Rio Rico to Shumen | 6,625.04 mi (10,661.97 km) |
| Rio Rico to Silistra | 6,587.15 mi (10,600.99 km) |
| Rio Rico to Sliven | 6,641.34 mi (10,688.21 km) |
