What are the most popular routes to Grou?
| Amsterdam - Grou | Average priceTHB 2,690 | Average duration2h 33m | Daily departures232 | |
| Alkmaar - Grou | Average priceTHB 2,767 | Average duration3h 28m | Daily departures66 | |
| Heerhugowaard - Grou | Average priceTHB 2,767 | Average duration3h 45m | Daily departures22 | |
| Meppel - Grou | Average priceTHB 1,098 | Average duration35m | Daily departures32 | |
| Groningen - Grou | Average priceTHB 2,219 | Average duration1h 59m | Daily departures56 | |
