| Cities | Distance |
|---|---|
| Groslay to Oria | 949.24 mi (1,527.65 km) |
| Groslay to Oristano | 698.43 mi (1,124.01 km) |
| Groslay to Orta Nova | 836.91 mi (1,346.88 km) |
| Groslay to Orte | 660.75 mi (1,063.37 km) |
| Groslay to Ortona | 739.51 mi (1,190.13 km) |
| Groslay to Orvieto | 638.17 mi (1,027.03 km) |
| Groslay to Orzinuovi | 433.68 mi (697.94 km) |
| Groslay to Osimo | 653.14 mi (1,051.12 km) |
| Groslay to Ospitaletto | 432.69 mi (696.35 km) |
| Groslay to Ostuni | 936.34 mi (1,506.90 km) |
| Groslay to Ottaviano | 815.74 mi (1,312.80 km) |
| Groslay to Ovada | 422.84 mi (680.50 km) |
| Groslay to Ozieri | 665.44 mi (1,070.91 km) |
| Groslay to Paceco | 914.57 mi (1,471.86 km) |
| Groslay to Pachino | 1,062.85 mi (1,710.50 km) |