Zoetermeer is well connected by public transport to The Hague, which in turn has excellent rail links to Amsterdam, Rotterdam, and Schiphol Airport. The RandstadRail tram (lines 3 and 4) runs from The Hague Central Station through the city to Zoetermeer's Stadshart and beyond, taking around 25 minutes. From Gouda, direct buses cross the polder in about 20 minutes.
By car, Zoetermeer sits on the A12 motorway between The Hague and Utrecht, making it easy to pass through as a day stop. There is adequate parking in the Stadshart area. Cycling from The Hague along dedicated paths is around an hour and passes through genuinely pretty Dutch countryside.