- Bonus boards
Successfully complete the indicated task to unlock the corresponding board:

Chaos Emerald Board	Get an 'S' rank on all Story missions.
Professional Board	Successfully complete all Trial missions.

- Bonus characters
Successfully complete the indicated task to unlock the corresponding character:

Shadow	Successfully complete the Team Heroes and Babylon missions.
Cream	Successfully complete the Team Heroes and Babylon missions.
Eggman	Successfully complete the Grand Prix campaign.
Rouge	Successfully complete the Team Heroes and Babylon missions.
Amy	Successfully complete the Team Heroes and Babylon missions.
Blaze	Successfully complete the Team Dark and Rose missions.
Silver	Successfully complete the Team Dark and Rose missions.
Metal Sonic	Successfully complete the Grand Prix campaign.
E1000-G	Successfully complete the Team Heroes and Babylon missions.
Vector	Successfully complete the Team Heroes and Babylon missions.

- Final Race
Overcome Team Rose and Team Dark to unlock the Final Race.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
Jolt King	The begin line's stopped you dead in your tracks over 30 times! Shocking!
Welcome License	You've cleared the Board Gear Basics Tutorial! You're a true rider now.
Gutter King	You've taken damage from 30 or more Bowling Strikes! Somebody's got it out for you!
Charred King	You've taken damage from over 30 Target Torpedoes! Ouch!
15 Points
Survival King	You took 1st in a Damage Survival race with 150 or more points! Impressive battle technique!
Frozen Master	You've broken the 4'15'00 record on the Frozen Forest standard course! Try for an even better time!
Metal Master	You've broken the 3'15'00 record on the Metal City standard course! Try for an even better time!
Forgotten Master	You've broken the 4'15'00 record on the Forgotten Tomb standard course! Can you do better?
Bomb-Happy	You've launched 30 or more Target Torpedoes at your rivals! Pretty impressive throwing arm there!
Offline Champ License	You've taken 1st in 16 offline Normal Races! You're now amongst the top echelon of riders!
Ringmaker	You've used 30 or more Ring Cans! Hurry to the Shop as soon as you save up some Rings!
Troublemaker	You've attacked your rivals 30 times or more with Octo-Ink! Squeegee, anybody?
Rich King	You've collected 10,000 Rings or more! Time to go shopping!
Masters	You've attacked your rivals 30 times or more with a Tee Shot! Fore!
Tutorial License	You've cleared every Tutorial topic! You have mastered every Gear technique!
Boost Star	You've used 30 or more Octo-Boosts! Those Blue Octopi love you!
Final Master	You've broken the 4'00'00 record on the Final Factory standard course! Try for an even better time!
Debut License	You've uploaded your first record to the leaderboards! Aim to be world's best!
Magma Master	You've broken the 3'36'00 record on the Magma Rift standard course! Try for an even better time!
Dolphin Master	You've broken the 3'45'00 record on the Dolphin Resort standard course! Can you do better?
Time Attack License	You've raced every course in Time Attack Mode! Hammer the best time out of every course!
First License	You took 1st in a Normal Race! The real race begins now!
Metropolis Master	You've broken the 3'50'00 record on the Metropolis Speedway standard course! Can you do better?
Rocket Star	You've used 30 or more Soda Rockets! Shake it, shake it, baby!
Ring Acquireion License	You've raced every course in Ring Acquireion Mode! Gimme gimme gimme!
Clutch Shooter	You've attacked your rivals with 30 or more Free Throws! Nice shot!
Damage Survival License	You've raced every course in Damage Survival Mode! Attack, attack, attack! Aim for that high score!
Punchout	You've attacked your rivals 30 times or more with a Bowling Strike! Nice bowling!
Rocky Master	You've broken the 4'00'00 record on the Rocky Ridge standard course! Try for an even better time!
Part Acquireor	You've collected every Gear Part! Try every last one!
20 Points
Trick King	You've scored an X-rank trick on every standard course! You're a trick pro!
City Master	You've broken the 5'20'00 record on the Metal City expert course! Try for an even better time!
Forest Master	You've broken the 5'00'00 record on the Frozen Forest expert course! Try for an even better time!
Factory Master	You've broken the 5'22'00 record on the Final Factory expert course! Try for an even better time!
Ridge Master	You've broken the 5'45'00 record on the Rocky Ridge expert course! Try for an even better time!
Rift Master	You've broken the 5'00'00 record on the Magma Rift expert course! Try for an even better time!
Tomb Master	You've broken the 5'00'00 record on the Forgotten Tomb expert course! Can you do better?
Speedway Master	You've broken the 4'50'00 record on the Metropolis Speedway expert course! Can you do better?
Resort Master	You've broken the 4'42'00 record on the Dolphin Resort expert course! Can you do better?
30 Points
Character License	You can play as any character! Try them all out!
Tag License	You've raced every course in Tag Race! Aim for a new world record with your perfect partner!
Relay License	You've raced every course in Relay Race! Aim for a new world record with your outstanding teamwork!
Expert Trick King	You've scored an X-rank trick on every expert course! You're a trick master!
Grand Prix License	You've cleared the World Grand Prix! Congratulations on your victory!
Technical King	You've placed 1st without kick dashing! That's some undisputable skill!
40 Points
Character Master	You've placed 1st with every character! You've perfected each characters' techniques!
Gear Acquireor	You've collected every Gear! Ride every single one of them!
Ring King	You've finished with 400 Rings or more in Ring Acquireion mode! You're a true Ring tycoon!
Dash King	You've got an UNBELIEVABLE Begin Dash on every course! No one can keep up with your amazing dashes!
50 Points
Gear Master	You've placed 1st with every Gear! You riding technique is unparalleled!

- Avatar Awards
Successfully complete the indicated task to unlock the corresponding Avatar Award:

Jet t-shirt	Place first on every course with Jet.
E-10000 G t-shirt	Place first on every course with E-10000 G.
Sonic Free Riders t-shirt	Watch the credits in their entirety.
Sonic t-shirt	Place first on every course with Sonic.

- Team Rose and Team Dark
Overcome Team Heroes and Babylon to unlock Team Rose and Team Dark.