Danish Railways (DSB) operates a train from Roskilde to Århus hourly. Tickets cost $40 - $60 and the journey takes 2 h 50 min. Alternatively, Movia operates a bus from Roskilde to Århus every 30 minutes. Tickets cost $2 - $4 and the journey takes 17 min. Flixbus also services this route 5 times a day.
How to get from Roskilde to Århus
From Roskilde st train to Aarhus. 2 h 50 min 311 kr. From Stændertorvet bus to Roskilde then bus to Aarhus. 5 h 2 min. From Roskilde drive to Odden, car ferry to Aarhus, then drive to Århus. 2 h 15 min 760 kr.