Where are the changing rooms?
Stress 'spo-glia-TOI'. The 'gl' sound is like the 'lli' in 'million' — a soft palatal.
Ask this on your first visit or after a class. It's a basic orientation question suitable for any gym context.
'Spogliatoi' is the plural of 'spogliatoio' (changing room/locker room). 'Dove sono' asks 'where are'. You can substitute other gym locations: 'le docce' (showers), 'i bagni' (toilets), 'la palestra pesi' (weights room).
Dove sono le docce?
Where are the showers?
Common follow-up question.
C'è un armadietto disponibile?
Is there a locker available?
When you need to store belongings.
Devo portare il lucchetto?
Do I need to bring a padlock?
Gyms often require your own padlock for lockers.
In Italian gyms, it is customary to shower after your workout before leaving. Walking out sweaty is considered bad manners ('maleducazione'). Many gyms also require you to place a towel on equipment — 'Usate sempre l'asciugamano!' (Always use a towel!) is a common sign.