At GRIP, we have everything you need to have fun and improve your bouldering skills! As the biggest dedicated bouldering gym in the Netherlands (5,000m²) with more than 200 boulders, we offer something for all levels and needs.
Our modern walls come in a wide range of shapes and angles, with big overhangs, various slabs, top-outs, and everything in between. To make the most of all these walls, we have a huge selection of top-tier holds in different shapes and sizes so we can create diverse and interesting boulders for all grades. Whatever your skill level, you’ll find plenty of exciting and challenging boulders to enjoy!
Attention! Advanced bookings are required for groups of more than 5 people. Please make a booking 2 business days in advance. If you’re bringing children under 12, please make sure there’s at least one adult for every two kids. Give us a call for last minute bookings.
At GRIP, we use the French grading system, with routes ranging from 3A (marked in green for beginners) to 8B (marked in black for advanced climbers). If you want to learn more about our setting philosophy and schedule, you can read about it on our route setting page.
We have two identical versions of the adjustable Slab Wall designed by Lemur Wall Design and Kilter (we refer to them as the Black Boards). They can be adjusted from a 10-degree incline to a 40-degree overhang, making them incredibly versatile.
We use the walls for comp-style boulders and switch up the angle and problems on one of the them every week. Be sure to check them out when you visit!


If you’re looking for training facilities, our Boardroom has everything you need. In here we have:
If you’ve never climbed on a board like the Kilter or Tension board before, don’t worry! Just follow the guide at the gym to connect with the boards. Our staff are also happy to help you.
The Slabotory walls are three polished slab walls. As the name suggests, these are experimental walls where our route setters unleash their creativity and create all sorts of challenges and technical boulders. If you’re looking to push yourself both mentally and physically, give these unique walls a try!
TopLogger is an app where you can track your ascents, check your progress, and get involved with the gym. Find GRIP Boulderhal on Toplogger and use the interactive map to locate climbs and make your own to-do list!
Any questions or comments? Please get in touch!