When riding abroad it can be nice to have your own bike. However, this is not always practical or cost-effective. There are a number of places to hire a bike from in Mallorca at a reasonable rate.
Depending on how long you go for it may or may not be cheaper to hire. Generally, you will be looking at around 30-50EUR per day for a road bike. If you are looking to take your own this can often cost 70EUR each way on the flight and you would also need to buy/hire a bike box.
If you are looking to complete the Mallorca 312 challenge then I would get in early with your booking to avoid disappointment. On the event weekend with 8000 riders there are no bikes left on the whole island
Arrivo Cycling is the official sponsor of the Mallorca 312 and offers bike rental along with cycling holidays & hotels
Check out their event packages here
Where to hire your bike in Mallorca
I asked for recommendations before I put this list together so here are the top ones. I have listed in resort location to make it easier however many will deliver.
Alcudia
Port de Pollenca
Pollenca
Palma
Playa de Muro
Soller
Other
Velo Sport Team (offer delivery)
Your Bike Hire (offer delivery)
North Wind Cycles (offer delivery)
Speedbike (offer delivery)
Berganti Bikes (offer delivery)