The circuit was built from 1970 and 1972, and inaugurated that year. Its initial length was 3.488 km (2.167 mi) and it only had a small, open pit area. This version of the circuit hosted three editions of the San Marino motorcycle Grand Prix, from the 1985 season to the 1987 season. In 1993, the track was modified for the first time, increasing its length to 4.060 km (2.523 mi), and new facilities and pit garages were built. It was at Misano during the 1993 Italian Grand Prix that Wayne Rainey's career ended after he fell and suffered a broken spine. Between 1996 and 2001, all facilities were further improved, adding more pits and stands. In 2005, a new access point to the circuit, Via Daijiro Kato, was built in honor of Daijiro Kato.
In 2006, the circuit was extensively modified to host the World motorcycle championship again. The circuit direction was changed to clockwise, the track length was brought to 4.180 km (2.597 mi), and the track width was widened to 14 m (15 yd). The first MotoGP race held on the circuit after these modifications was the 2007 San Marino and Rimini Riviera motorcycle Grand Prix, which was won by Ducati.
During the 2010 Moto2 event, Shoya Tomizawa was killed after losing control of his bike and being struck by Scott Redding and Alex de Angelis. On 3 November 2011, the circuit owners announced that it would be named after Marco Simoncelli, an Italian motorcyclist who died during the 2011 Malaysian Grand Prix. Simoncelli was born in nearby Cattolica and had lived in Coriano. On 8 June 2012, the track's new name was confirmed at the San Marino round of the Superbike World Championship.
The circuit currently hosts events such as the CIV Superbike Championship, European Truck Racing Championship Misano Grand Prix Truck, TCR World Tour ACI Racing Weekend Misano, Italian GT Championship, Italian F4 Championship, and Porsche Carrera Cup Italia. It also hosts the International GT Open, Supersport World Championship, Sportbike World Championship, Euroformula Open Championship, FIM Women's Circuit Racing World Championship, and GT Cup Open Europe. In July, it hosts the GT World Challenge Europe, GT2 European Series, GT4 European Series, and McLaren Trophy Europe.
Former events include the 24H Series, Michelin 12H Misano, 3000 Pro Series, BOSS GP, Deutsche Tourenwagen Masters, Eurocup Formula Renault 2.0, Eurocup Mégane Trophy, Euroseries 3000, European Formula Two Championship, European Touring Car Championship, Ferrari Challenge Europe, Ferrari Challenge Finali Mondiali, FIA European Formula 3 Championship, FIA Formula 3 European Championship, FIA Formula E World Championship (Misano ePrix), FIA Sportscar Championship, FIM Endurance World Championship, Formula ACI/CSAI Abarth Italian Championship, Formula Regional European Championship, Formula Renault 2.0 Alps, Formula Renault 3.5 Series, French F4 Championship, Emilia Romagna motorcycle Grand Prix, GTR Euroseries, International GTSprint Series, Italian Formula Renault Championship, Italian Formula Three Championship, Lamborghini Super Trofeo World Finals, MotoE World Championship (San Marino and Rimini Riviera eRace), Porsche Carrera Cup France, Porsche Carrera Cup Germany, Porsche Sports Cup Deutschland, Sidecar World Championship, Super Tourenwagen Cup, Supersport 300 World Championship, Superstars Series, TCR Europe Touring Car Series, Ultimate Cup Series, and W Series.
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