By rail: The RheinNeckar S-Bahn connects Hirschhorn with Heidelberg and Mannheim in the west and from there with the whole network of German Rail. Towards the northeast, the railway line leads to Mosbach and Osterburken, whereas another branch carries on along the Neckar to Heilbronn and Stuttgart. During the week, S-Bahn trains run every half hour, at the weekends the intervals are longer (usually an hour).
By road: Bundesstrasse 37 (which is combined with Bundesstrasse 45 in this part of the Neckar valley) links Hirschhorn with Heidelberg and the motorways to the north, south and west, with Sinsheim and the region south of the Neckar and towards the Black Forest, and with Heilbronn and all the roads and motorways into the east, northeast and southeast. Through-traffic is led past Hirschhorn over two bridges and through a tunnel, thus avoiding the long curve of the river where Hirschhorn is situated. The Odenwald hills and valleys can also easily be reached by car.
The River Neckar itself is a busy artery, too. Weirs and locks make the Neckar a navigable waterway, which is used by barges and pleasure boats. The weir and lock at Hirschhorn were built in 1933, together with a bridge across the Neckar, which led to a rapid expansion of the town on the south bank
