Nijmeegse Vierdaagse – 4 days March

Every year in the third week of July, Nijmegen plays host to the biggest hiking event in the world.

With about 45,000 hikers from around the globe, this event isn’t called “walk of the world” for nothing! The festivities last from the weekend prior to the hike, all through the week to the finish on Friday. Dozens of stages dot the city and around 1.5 million people come to visit.
https://www.4daagse.nl/en/