These are generally the longest and most common type of race, lasting anywhere from a minute to half an hour, depending on the track and amount of laps. In Circuit races, you race around a closed track for a certain amount of laps. There are four different kinds of races in the game: Circuit, Point-to-Point, Sprint, and Showoff.
As you do all of this in Career, you will become steps closer to 100% completion. At first, only the first crew leader will be listed, but as you bet against the other 7 crew leaders, they will be added to your mobile phone. (You can also, for a fee, look at the stats of their car.) You also have a mobile phone, chosen at the start of Career mode, which you can use to call the leaders of the different crews and either take on their crew challenges, or race them for pink slips (if you have a sufficient amount of Respect). You can also bet when racing, where you can bet a set amount of money on yourself if they challenge you, though, they give you a set amount, and you can choose whether to accept, decline, raise, or lower the bet. If they lose, you lose your betted amount if they win, you get twice the amount of money you bet on them. Once you get a car fitted with all Level 3 upgrades, there will be sponsored races hosted, in which the winner will get a prototype part for the area depicted in the flyer. In addition to racing in the events, you can also "attend" the events, where you can bet up to $500,000 on whoever you think will win. You can advance to better classes by applying upgrades and buying faster cars, which will appear from time to time in the dealership. Class 8 is the lowest class, while Class 1 is the highest. There are also 8 car classes, depending entirely on horsepower. You can also raise a crew of your own, and each of the unlockable crew members will ask to join at random times. There are 8 crews, with different respect levels, which can be raised or lowered based on your application to their specialties and race performance. You can then take your car and race it against the other racing crews in the city.
In this game mode, you must earn money to buy and upgrade cars with authentic name-brand parts. There is also a Custom Race option at the main menu, where you can use any unlocked car, "auto-mod" it, and race it on the track of your choice. To win the series, you must win all 5 races in that series. You are given a pre-determined car and track to race on.
You must start at the Novice Series and work your way up, although the last four series can only be unlocked by 100% completing the already available Arcade series. There are 15 in all (counting the Prototype and Extreme Nitrous series), totaling up to 75 races in all. In Arcade, you can enter a 5-event race series. Players can choose from Career or Arcade modes. It also takes the car control realism and damage aspect from Gran Turismo. It has similarities to Need for Speed: Underground with the immense car customization, Nitrous Oxide, and the racing crews.
The gameplay of Juiced was inspired by the Need for Speed and Gran Turismo game series.