Use a referral code when you register and get free minutes to your rides in Barcelona and Madrid.
Click your friend's referral link or apply their code at sign-up and the discount is automatically applied to your account. The discount will show up in the receipt section upon checkout. No code is required at checkout to receive the discount of 1 free day of riding when you book 3 or more days or 25% off if you book for less than 3 days.