A 40-kilometer walk is quite a feat, but make no mistake, 10- and 20-kilometer walks also require good preparation. Do not underestimate the distance, by any means. Walking in the dark also requires additional effort. Nevertheless, you'll definitely experience an unforgettable night and you'll receive a well-deserved medal in return. Share your best photos, including those of your training sessions, on Twitter, Facebook, and Instagram. #NvdV19
Be well prepared! We've put together a list of practical tips.