High Quality Content by WIKIPEDIA articles! The 1990 San Marino Grand Prix was a Formula One motor race held on 13 May 1990 at Imola. It was the third round of the 1990 Formula One season. It was the tenth San Marino Grand Prix and it was the eleventh time Imola hosted a Formula One Grand Prix. The race was held over 61 laps of the five kilometre circuit for a race distance of 307 kilometres.