| Seclin to Zottegem | 40.26 mi (64.79 km) |
| Seclin to Zulte | 30.98 mi (49.86 km) |
| Seclin to Zwevegem | 21.90 mi (35.24 km) |
| Seclin to Zwijndrecht | 73.23 mi (117.86 km) |
| Seclin to Asenovgrad | 1,191.34 mi (1,917.28 km) |
| Seclin to Aytos | 1,263.14 mi (2,032.83 km) |
| Seclin to Balchik | 1,274.81 mi (2,051.61 km) |
| Seclin to Bankya | 1,092.23 mi (1,757.77 km) |
| Seclin to Bansko | 1,143.03 mi (1,839.52 km) |
| Seclin to Berkovitsa | 1,069.92 mi (1,721.87 km) |
| Seclin to Blagoevgrad | 1,119.52 mi (1,801.70 km) |
| Seclin to Botevgrad | 1,110.82 mi (1,787.69 km) |
| Seclin to Burgas | 1,280.04 mi (2,060.02 km) |
| Seclin to Byala Slatina | 1,094.59 mi (1,761.58 km) |
| Seclin to Chirpan | 1,202.59 mi (1,935.38 km) |
