What are the most popular routes to Grou?
| Amsterdam - Grou | Average priceCOP 248,637 | Average duration2h 33m | Daily departures226 | |
| Zwolle - Grou | Average priceCOP 149,065 | Average duration50m | Daily departures32 | |
| Alkmaar - Grou | Average priceCOP 251,793 | Average duration3h 28m | Daily departures80 | |
| Heerhugowaard - Grou | Average priceCOP 251,793 | Average duration3h 45m | Daily departures26 | |
| Utrecht - Grou | Average priceCOP 239,591 | Average duration2h 12m | Daily departures190 | |
