Don't know if you can do anything sooner than your one year contract date but, BE CAREFUL!
I have had a really bad experience with this gym, I stopped going 7 months into my years contract as I was so utterly disgusted with the place. However, being bound by contract, I continued to pay the monthly €62.
My year's contract ends this month, and rather than give the gym the opportunity to upset me again, I cancelled my direct debit last week. I did this to ensure that they wouldn't take any more money out, as I have no intentions of continuing my membership.
Today I received this letter in the post:
"...We have recently received notice from your bank stating that the instruction for direct debit has been cancelled. When you joined the club you sign up to an ongoing contract and should you wish to cancel then we require written notice and 2 further monthly direct debit payments, this is in accordance with the Terms & Conditions of your contract........."
Needless to say, I'm livid. This was never clarified when I joined, in fact I was told that I would have to renew my membership after my year's contract was up. I have no doubt it's buried somewhere in the small print all the same.
So, be careful! If you think you have a year's contract, you don't it's ongoing!