If you look at the hundreds of routes we’ve designed in the Netherlands, very few would be classified as hilly. But here’s one! Mount Saint Peter is a 171m-tall plateau that features the remains of a castle, a monastery, a fort, and other buildings. There’s also a cave under the mountain, which can be visited with a guide.
This is a park-like area with some nice trails for running — and an opportunity to get in some elevation! The mountain/plateau itself is a bit of an industrial site. We recommend a loop starting at the northern part of the area, at the Fort. Run south on the paths/trails paralleling Mergelweg. At Devil’s Cave (Duivelsgrot) at the southern end, you’ll be right near the Belgian border, making a loop to head back north, on the path alongside Maasboulevard, with the Meuse River on the right. You’ll pass the St Pieter pilgrimage place, a museum, and a watersports club. At Villa Park, turn LEFT onto Burgemeester Ceulenstraat, then LEFT on Bergweg and RIGHT on Observantenweg to complete the loop.