Bydgoszcz (Kujawsko-pomorskie Voivodeship) has 3 climbing gyms in our database. We confirm data at the source; still, check hours and climbing type with the climbing gym before you go.
Bydgoszcz has one venue: Centrum Wspinaczkowe Spider on Świecka, with both bouldering and rope climbing. It opens at 14:00 on weekdays, so it is an afternoon and evening spot.
The nearest alternative is Toruń — two climbing gyms, one of them open from 08:00. For a session before work that can be a real difference, despite the forty-minute drive.