The track was inaugurated as a semi-permanent venue in 1953. In its original configuration, which remained unchanged until 1972, there were no chicanes; the runs from Acque Minerali to Rivazza, and from Rivazza through the pits and the Tamburello corner, were essentially flat-out straights with a few small bends. The first motorcycle races took place in April 1953; the first car race was held in June 1954.
In April 1963, the circuit hosted its first Formula One race — a non-championship event won by Jim Clark for Lotus. A further non-championship event was held in 1979, won by Niki Lauda for Brabham-Alfa Romeo.
In 1980, Imola officially entered the Formula One World Championship calendar by hosting the Italian Grand Prix — the first time since 1948 that Autodromo Nazionale Monza did not host that race. The race was won by Nelson Piquet. Its success led to the creation of the San Marino Grand Prix, established specifically for Imola in 1981 and held there annually until 2006, run over 60 laps of the 5.040 km circuit.
Safety concerns with the high-speed Tamburello corner persisted through the 1980s and 1990s. The corner was very bumpy and had dangerously little room between the track and a concrete wall, with no tyre barrier separating the circuit from the Santerno river running adjacent to it.
In 1987, Nelson Piquet crashed heavily in practice after a tyre failure and missed the race due to injury. In 1989, Gerhard Berger's Ferrari ignited after a front wing failure caused a 300 km/h impact at Tamburello; Berger survived and missed only one race — the 1989 Monaco Grand Prix — due to burns. Michele Alboreto suffered a massive shunt while testing his Footwork Arrows at the circuit in 1991 but escaped injury. The following year, Riccardo Patrese also crashed at Tamburello while testing for Williams.
The 1994 San Marino Grand Prix was the defining event in the circuit's safety history. During Friday practice, Rubens Barrichello was launched over a kerb at Variante Bassa and knocked unconscious, though medical intervention saved his life. On Saturday, Austrian Roland Ratzenberger died instantly from a basilar skull fracture after crashing head-on into a wall at over 310 km/h at the Villeneuve corner following a front wing failure on his Simtek. On Sunday, three-time World Champion Ayrton Senna's Williams steering column broke and he crashed into the concrete wall at Tamburello on lap 7; Senna died in hospital several hours later. In two unrelated incidents, several spectators and mechanics were also injured during the event.
In the aftermath, Tamburello was converted from a flat-out left-hander to a left-right-left chicane with a gravel trap. The Villeneuve corner was changed from a 6th-gear right-hander into a 4th-gear sweeper, also with a gravel trap. The Acqua Minerali chicane was eliminated to preserve some circuit character, and the Variante Bassa was straightened into a single chicane.
Before the 2006 Grand Prix, the kerbs at Variante Alta were lowered and the turn tightened to reduce accidents. Formula One was removed from the 2007 calendar; SAGIS, the circuit's owner, sought reinstatement but was denied.
From 2007, the circuit underwent major revision. A bypass to the Variante Bassa chicane was added for cars, making the run from Rivazza 2 to the first Tamburello chicane flat-out, partially restoring the circuit's original character. The old pit garages and paddock were demolished and completely rebuilt, and the pitlane was extended and resurfaced; reconstruction was overseen by German F1 track architect Hermann Tilke.
In June 2008, the FIA gave the track a "1T" rating. As of August 2011, the track received full FIA Grade 1 homologation after an inspection by Charlie Whiting.
In July 2016, Imola signed a deal to host the Italian Grand Prix from 2017. However, on 2 September 2016, Monza secured a new deal, and Imola's officials took legal action questioning the legality of government funding awarded to Monza; they withdrew their case on 8 November 2016.
In February 2020, Imola submitted a bid to replace the cancelled 2020 Chinese Grand Prix. On 24 July 2020, it was confirmed that the circuit would return to the Formula One calendar for the 2020 season as the Emilia Romagna Grand Prix, held over two days on 31 October and 1 November 2020. The circuit remained on the calendar for 2021 and 2022. The 2023 Grand Prix, set for 21 May 2023, was cancelled due to the 2023 Emilia-Romagna floods that also affected the circuit via the flooding Santerno river.
The current official lap record of 1:15.484 was set by Lewis Hamilton during the 2020 Emilia Romagna Grand Prix; the unofficial all-time track record of 1:13.609 was set by Valtteri Bottas in qualifying for that same race. The circuit's president is Giancarlo Minardi of the former Minardi F1 team.
Imola has hosted the Superbike World Championship from 2001 to 2006 and again since 2009. It has hosted the final round of the FIM Motocross World Championship since 2018. The World Touring Car Championship visited in 2005, 2008, and 2009. The 6 Hours of Imola was revived in 2011 as part of the Le Mans Series and Intercontinental Le Mans Cup, and returned to the European Le Mans Series calendar in 2022 as the 4 Hours of Imola.
The circuit also hosted the 1968 UCI Road World Championships — won by Italian cyclist Vittorio Adorni with a margin of 10 minutes and 10 seconds over runner-up Herman Van Springel, the second largest winning margin in championship history. It hosted stage 11 of the 2015 Giro d'Italia, won by Ilnur Zakarin, stage 12 of the 2018 Giro d'Italia, won by Sam Bennett, and served as start and finish of the 2020 UCI Road World Championships on 27 September 2020.
Since 1981, the circuit has hosted the early-September Mostra Scambio, an open-air market focused on vintage vehicles and their parts.
This article is based solely on the supplied corpus. No external sources were consulted; claims that could not be substantiated against the corpus were omitted under the drop-the-claim rule.
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