A small-group technique session on slab climbing for adults, one of Arsenaal's themed workshops. Entry and shoe hire are extra; book by 19:30 on the day.
As Klimzaal Arsenaal announced it. Plans change, so check with the wall before you go. Something wrong? Let us know.
€30, €25 for members
Arsenaal's first annual bouldering comp, open to everyone aged 16 and over: 50+ new problems over three qualifying waves (the first a quieter, low-stimulus wave), a climbing challenge, a final for the top five and an afterparty. Register in advance; spectators are welcome free.
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.
€25
Klimzaal Blok, Antwerp, Belgium45 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.

Pink Peaks, Grimbergen, Flemish Brabant, Belgium43 km away
A Halloween night of UV climbing and lead climbing: come in fancy dress and get a free drink.
Free in a Halloween costume
Rhino Boulder Gym, Ghent, East Flanders, Belgium4.8 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.

Free entry in costume
Arkose Canal, Brussels, Brussels-Capital Region, Belgium46 km away
Arkose Canal goes Halloween from 18:00, with a decorated hall, costumes, a raffle and Halloween drinks at the bar. Climb or just come for the evening; entry is free if you come in costume, though shoe hire is extra.

€1
De Bergpallieters Klimtoren, Buggenhout, East Flanders, Belgium30 km away
Members' film night in the club refuge beside the towers, showing The Sound (2025), a thriller about elite climbers attempting a forbidden rock wall. Doors open at 19:30, with drinks and snacks.

Klimzaal Banzai, Aalst, East Flanders, Belgium22 km away
Two hours of relaxed rope climbing with a member of the Banzai team, who climbs along and gives tips. There's no competition and no need to sign up.
