If you want to rent a bike in Girona for cycling in Costa Brava, there are many places where you can do so. Here are some of the most popular places:
High end road bikes starting a 75 Euros a day
https://bikecat.com/rental-bikes-in-girona
The rent road bikes, mountain bikes, touring bikes and e-bikes starting a 35 Euros a day
https://www.bikerentgirona.com
The rent road bikes, mountain bikes, touring bikes, e-bikes and kids bikes starting at 40 Euros a day
https://www.eatsleepcycle.com/bike-rental-girona/
High end road bikes and e-bikes starting at 50 Euros a day
https://trektravel.com/cycling-center/girona-bike-tours/girona-bike-rentals/
Bike to rent from private owners
https://www.listnride.com/girona
The rent road bikes, mountain bikes, touring bikes, e-bikes and kids bikes starting at 30 Euros a day
https://www.rentabikegirona.com
Every type of bike but minimum is 3 days
https://www.cctbikerental.com/rentals/girona-bike-rentals/
high end road bikes from 60 euros a day
https://www.rocacorbacycling.cc/girona-bike-rental
Life is like riding a bicycle. To keep your balance, you must keep moving.