A good circle ride traverses what's billed as the Groene Hart (Green Heart) of the region. It begins just south of the centre and runs 42km through the canal-laced farmlands south of Gouda. Called the Krimpenerwaard Route after the region it covers, it includes stops at dairies where cheese is made. Pick up the free brochure from the tourist office, which also sells detailed maps.
Download handy walking-tour maps and information at http://www.xplregouda.nl/#/