Autódromo Internacional do Algarve is one of the best and most modern racing circuits in the world.The 100,000 capacity Algarve International Circuit, commonly referred to as Portimão Circuit, is a 4.692 km (2.915 mi) race circuit located in Portimão, Portugal. With a total cost of €195 million, the project includes a karting track, technology park, five-star hotel, sports complex and apartments. Construction was finished in October 2008 and the circuit was homologated by both the FIM on 11 October 2008 and the FIA two days later. Length: 4.684 KM | 2.911 MI Racetrack Link: autodromodoalgarve.com