Namur's Citadel — one of the largest fortresses in Europe — sits on a hill some 100 metres above the city, reached by a two-kilometre cobbled climb from the banks of the Meuse. The gradient itself, averaging 5.3%, is unremarkable; the worn, slippery cobbles are what make it a genuine test.
That combination has made the Citadel a fixture of Walloon racing. It's climbed annually in the Grand Prix de Wallonie and has hosted the Tour de France peloton three times, in 1989, 2012, and again in recent years. Since 2009, it's also home to the Citadelcross, part of the UCI Cyclo-cross World Cup since 2011.
Mathieu van der Poel has won the Citadelcross six times, and Belgian cyclocross rider Paul Herygers once called the Namur course "possibly the hardest track of the year" — a claim that's held up as the race has added steeper off-camber sections and additional climbs in recent editions.
Namur will host the 2030 UCI Cyclo-cross World Championships, cementing a relationship between city and sport that already runs through three different disciplines on the same hill above the Sambre and Meuse.
