| Cities | Distance |
|---|---|
| Seclin to Oria | 987.48 mi (1,589.19 km) |
| Seclin to Oristano | 783.00 mi (1,260.11 km) |
| Seclin to Orta Nova | 879.07 mi (1,414.72 km) |
| Seclin to Orte | 713.19 mi (1,147.76 km) |
| Seclin to Ortona | 781.79 mi (1,258.17 km) |
| Seclin to Orvieto | 690.53 mi (1,111.30 km) |
| Seclin to Orzinuovi | 477.62 mi (768.66 km) |
| Seclin to Osimo | 692.15 mi (1,113.91 km) |
| Seclin to Ospitaletto | 473.78 mi (762.47 km) |
| Seclin to Ostuni | 973.55 mi (1,566.78 km) |
| Seclin to Ottaviano | 866.41 mi (1,394.35 km) |
| Seclin to Ovada | 484.65 mi (779.96 km) |
| Seclin to Ozieri | 745.98 mi (1,200.55 km) |
| Seclin to Paceco | 985.86 mi (1,586.58 km) |
| Seclin to Pachino | 1,127.13 mi (1,813.94 km) |