Białystok (Podlaskie Voivodeship) has 2 climbing gyms in our database. We confirm data at the source; still, check hours and climbing type with the climbing gym before you go.
Our database lists two climbing gyms in Białystok. Both combine bouldering with rope climbing, so what really separates them is when they are open. Centrum Wspinaczkowe Flash on Przędzalniana 60 runs all week: from 08:00 Monday to Thursday, from 15:00 on Friday, and 10:00–20:00 at weekends. Balder on Artyleryjska 7 opens only on Mondays and Thursdays, between 17:30 and 21:30.
In practice a training week in Białystok is built around Flash, with Balder as an option on two specific evenings. Since both gyms offer bouldering and roped routes, choosing between them is a question of hours and travel time rather than the kind of climbing.