A round of the Regional Climbing Youth Cup, the Flemish bouldering series for young climbers in the U11 to U19 categories. Sign up in advance on Etto Climbing, or at the hall from 09:00; the fee is paid on the day. Klimax is closed to other climbers that day.
As Klimax announced it. Plans change, so check with the wall before you go. Something wrong? Let us know.
An afternoon of bouldering for higher-education and university students, with problems for every level, a chance to win a prize by logging climbs on TopLogger, and snacks in the bar afterwards. Register on Twizzit; shoes can be hired for €3.
Free with entry
Three weeks of competition problems for every level, to climb whenever suits you and log on TopLogger. Winners are announced on Instagram on 13 December, with a crash pad among the prizes.
The first round of the Belgian Lead Youth Cup, held together with the Open Flemish Youth Championship (OVJK). The federation lists the date as provisional; Klimax's own calendar has it too, and the hall is closed to other climbers that day.
The Belgian speed climbing championship for 2027, on the federation's calendar and in Klimax's club calendar as BK Speed.
€25
Klimzaal Blok, Antwerp, Belgium15 km away
Blok's big annual bouldering comp, with qualifying waves through the day for youth, amateur and pro climbers, a final from 20:30 with a DJ, and an afterparty. The hall is closed on 22 and 23 October while the problems are set.

€5 if you wear glitter
Beest Boulders Antwerpen, Antwerp, Belgium21 km away
An ABBA-themed evening of climbing and dancing under disco lights. Entry is €5 for anyone who turns up wearing glitter.

Klimzaal De Stordeur, Leuven, Flemish Brabant, Belgium31 km away
A stop on Blue Ice's harness demo tour, where climbers can try the Vista and Cuesta harnesses on the wall. The time hasn't been announced; the tour's stop at Klimax ran from 17:00.

Pink Peaks, Grimbergen, Flemish Brabant, Belgium15 km away
A Halloween night of UV climbing and lead climbing: come in fancy dress and get a free drink.
Evolution Verticale, Woluwe-Saint-Lambert, Brussels-Capital Region, Belgium24 km away
An evening session with the lights turned off: climbing in the dark by head torch, with fancy dress encouraged.

Free in a Halloween costume
Rhino Boulder Gym, Ghent, East Flanders, Belgium44 km away
A Halloween night with the main lights off and the gym lit by blacklight holds, plus a set of scary slabs. Entry is free for anyone in a Halloween costume.
