The Grote Rivieren Tocht is a cycling tour based in Woerden, Utrecht province, held on the last Saturday of August. WTC Woerden organizes it as the final public tour of the local summer season, offering route options of approximately 73, 115, and 165 km, with some sources also listing 100 and 175 km distances.
The routes depart from Woerden, following rivers through Utrecht and South Holland. The ride emphasizes long distances along Dutch waterways, not a closed racing circuit. Riders may download GPX files beforehand; registration is not necessary. The club canteen operates during the event, creating an atmosphere of a season-ending club day where regular cyclists can invite friends to complete the summer tour calendar together.