Yes you may pay off your lending club loan in full earlier than the loan term and there won't be any prepayment penalties or any other fees if you do prepay the loan.
Other loan companies may charge a loan payoff early fee however lending club doesn't charge any fees for early payoff of the loan.
Also any additional payments towards your lending club principal balance will allow you to repay your lending club loan early by reducing the total amount of interest you'll pay.