Stoptrains from Arnhem
The two ways ticket from Arnhem to Rheden and back is costing about 3.80 Euro. You will have at least one "stoptrain" from Arnhem to Rheden at every hour. The trains are looking nice and it seems that even at the rush hour they are not so crowded.
Be sure that the train is stopping in Rheden. The Intercities are not!
Do not forget that the only way to buy a ticket in Rheden is from the ticket machine... I have rather prefere to have a two ways ticket.
Posbank walks are the best in Arnhem neighborhood
The Posbank (Veluwezoom National Reserve) is an ideal place to walk. This way you will really enjoy this natural setting and pass beautiful trees, bushes and plants. Sometimes a deer crosses your path or a rabbit speeds away over the heatherfields. Visiting friends are always treated to a ride to and walk over the Posbank.
Freeway-exit along the IJssel-highway
Though Reden is situated on the railway linking Arnhem with Deventer and Zwolle, the easiest way to get there is over the highway from Arnhem to Dieren (direction Zutphen) and get of at exit Rheden. From her it's a few minutes to the Posbank. For the castle of Middachten one better gets of at exit De Steeg and before you enter the village, turn left onto the driveway to the castle.