Races in GTA Liberty City Stories
Street Races are a set of side missions in GTA Liberty City Stories. There are two types of races. There is a car race, and there is a motorbike race. Car races are unlocked after completing Grease Sucho, Driving Mr. Leone, and Love on the Rocks. Motorbike races are unlocked after all of the missions above except for Grease Sucho. To first unlocked them you have to complete the mission Booby Prize. There are also RC Races. All of these are required for 100%.
Here's a list of all the street races: