Final Fanasy XV – How to Unlock Chocobos & Chocobo Jockey Trophy / Achievement Guide – Ride a Chocobo. [Bronze]
To unlock Chocobos you must first reach story chapter 3.
Step 1: Talk to Wiz at the Chocobo post (Duscae Map). When arriving in chapter 3 a side quest called “Friends of a Feather” will be marked there automatically. Accept his hunting quest “A Behemoth Undertaking” and kill the Behemoth (marked as mission target).
Step 2: After killing the Behemoth you must return to Wiz and talk to him again.
You can now interact with Rent-a-Bird machines. They are found at most outposts and parking spots. It costs 50 Gil per day to rent a Chocobo. You can press R2/RT to whistle for your chocobo wherever you are. After the rental period has expired the Chocobo will run back to its outpost and you must rent a new one. You can also rent for several days at once.