| Delray Beach to Popovo | 5,730.91 mi (9,223.01 km) |
| Delray Beach to Provadia | 5,788.80 mi (9,316.18 km) |
| Delray Beach to Radnevo | 5,754.01 mi (9,260.18 km) |
| Delray Beach to Radomir | 5,612.57 mi (9,032.55 km) |
| Delray Beach to Rakitovo | 5,682.17 mi (9,144.56 km) |
| Delray Beach to Rakovski | 5,711.42 mi (9,191.64 km) |
| Delray Beach to Razgrad | 5,736.86 mi (9,232.58 km) |
| Delray Beach to Razlog | 5,657.66 mi (9,105.13 km) |
| Delray Beach to Ruse | 5,702.49 mi (9,177.27 km) |
| Delray Beach to Samokov | 5,646.72 mi (9,087.52 km) |
| Delray Beach to Sandanski | 5,659.67 mi (9,108.36 km) |
| Delray Beach to Sevlievo | 5,693.00 mi (9,162.00 km) |
| Delray Beach to Shumen | 5,763.63 mi (9,275.67 km) |
| Delray Beach to Silistra | 5,748.42 mi (9,251.19 km) |
| Delray Beach to Sliven | 5,758.38 mi (9,267.22 km) |
