| Pico Rivera to Popovo | 6,638.81 mi (10,684.14 km) |
| Pico Rivera to Provadia | 6,677.87 mi (10,746.99 km) |
| Pico Rivera to Radnevo | 6,694.69 mi (10,774.06 km) |
| Pico Rivera to Radomir | 6,602.61 mi (10,625.88 km) |
| Pico Rivera to Rakitovo | 6,666.12 mi (10,728.08 km) |
| Pico Rivera to Rakovski | 6,670.85 mi (10,735.69 km) |
| Pico Rivera to Razgrad | 6,634.62 mi (10,677.40 km) |
| Pico Rivera to Razlog | 6,655.71 mi (10,711.33 km) |
| Pico Rivera to Ruse | 6,603.46 mi (10,627.24 km) |
| Pico Rivera to Samokov | 6,631.24 mi (10,671.95 km) |
| Pico Rivera to Sandanski | 6,669.37 mi (10,733.31 km) |
| Pico Rivera to Sevlievo | 6,630.51 mi (10,670.77 km) |
| Pico Rivera to Shumen | 6,659.82 mi (10,717.95 km) |
| Pico Rivera to Silistra | 6,616.94 mi (10,648.93 km) |
| Pico Rivera to Sliven | 6,681.53 mi (10,752.88 km) |
