| Cities | Distance |
|---|---|
| Serres to Popovo | 208.26 mi (335.16 km) |
| Serres to Provadia | 246.21 mi (396.24 km) |
| Serres to Radnevo | 148.94 mi (239.70 km) |
| Serres to Radomir | 105.94 mi (170.50 km) |
| Serres to Rakitovo | 68.03 mi (109.48 km) |
| Serres to Rakovski | 110.76 mi (178.24 km) |
| Serres to Razgrad | 227.20 mi (365.64 km) |
| Serres to Razlog | 55.44 mi (89.23 km) |
| Serres to Ruse | 225.48 mi (362.88 km) |
| Serres to Samokov | 86.63 mi (139.42 km) |
| Serres to Sandanski | 36.26 mi (58.36 km) |
| Serres to Sevlievo | 156.33 mi (251.59 km) |
| Serres to Shumen | 230.42 mi (370.83 km) |
| Serres to Silistra | 281.99 mi (453.83 km) |
| Serres to Sliven | 180.87 mi (291.08 km) |