What are the most popular routes to Grou?
| Amsterdam - Grou | Average priceCOP 251,255 | Average duration2h 33m | Daily departures236 | |
| Zwolle - Grou | Average priceCOP 148,865 | Average duration50m | Daily departures33 | |
| Alkmaar - Grou | Average priceCOP 255,926 | Average duration3h 28m | Daily departures64 | |
| Heerhugowaard - Grou | Average priceCOP 255,926 | Average duration3h 45m | Daily departures21 | |
| Meppel - Grou | Average priceCOP 101,861 | Average duration35m | Daily departures22 | |
