Round 7 of the fourth Brussels Boulder Battle, a league that moves between Brussels halls: 30 new boulders of every level to try as often as you like during the round, scored out of 1,000 points in two categories. Taking part is free with entry to the hall; sign up on Etto Climbing.
As Arkose Canal announced it. Plans change, so check with the wall before you go. Something wrong? Let us know.
Free entry in costume
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.
€25
Klimzaal Blok, Antwerp, Belgium35 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, Belgium41 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, Belgium25 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, Belgium5.5 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, Belgium5.6 km away
An evening session with the lights turned off: climbing in the dark by head torch, with fancy dress encouraged.

€15
Klimkaffee Mechelen, Mechelen, Antwerp, Belgium20 km away
Klimkaffee's Halloween party: 20 new routes to climb in costume, a costume contest with a month's membership as the prize, then dancing to Party Roulette.
