Apart from the obvious delights such as enjoying the calming atmosphere of the river or hill walks, there are several local companies offering more energetic activities both river-based or land-based.
See below for the Carlow Tourism activities brochure. (I can personally vouch for Larry’s Barge as I spent a voyage on the roof, filming).
Kayakers at St Mullins
South Carlow Adventure Trail brochure: Activities brochure is linked here