To unlock these tracks, complete certain challenges in Challenge Cup.

Track	How to unlock
Demolition	Complete Ventura Blvd Bronze Challenge.
Fort Gidlow	Complete Neustein Bronze Challenge.
Hattan City	Complete Every Gold Challenge.
Keister Bay	Complete Demolition Bronze Challenge.
Kharga Temple	Complete Angel Peaks Bronze Challenge.
Koko Bay	Complete Tierra Piedra Bronze Challenge.
Neustein	Complete Kharga Temple Bronze Challenge.
Nukov	Complete Every Silver Challenge.
Polar Wharf	Complete Keister Bay Bronze Challenge.
Redpool Tip	Complete Every Bronze Challenge.
Silver Creek	Complete Koko Bay Bronze Challenge.
Tierra Piedra	Complete Polar Wharf Bronze Challenge.
Timgidski	Complete Silver Creek Bronze Challenge.
Ventura Blvd	Complete Fort Gidlow Bronze Challenge.