The 2010 British MotoGP at Silverstone has been put back two weeks and will now be staged on Sunday, 20 June. / Silverstone MotoGP
Several other changes have been made to the provisional calendar, affecting the dates of the races in France, Italy, Czech Republic and San Marino.
Silverstone is replacing Donington Park as the venue for the British MotoGP.
The Northamptonshire track is also in line to host a Formula 1 race in 2010, with talks ongoing about plans to stage the British Grand Prix.
The MotoGP season is due to start in Qatar on 11 April and end in Valencia on 7 November.
I doubt the riders will be pleased with it with three races in a row, twice in the season
And there may still be more changes made to the calendar after the draw for the 2010 football World Cup in South Africa takes place in Cape Town on 4 December.
Silverstone MotoGP: 2010 provisional MotoGP calendar:
11 April: Losail, Qatar *
25 April Motegi, Japan
2 May Jerez, Spain
23 May Le Mans, France
6 June Mugello, Italy
20 June Silverstone, Great Britain
26 June Assen, Netherlands **
4 July Catalunya, Spain
18 July Sachsenring, Germany
25 July Laguna Seca, US ***
22 August Brno, Czech Republic
29 August Indianapolis, US
5 September Misano, San Marino
19 September Balatonring, Hungary
10 October Sepang, Malaysia
17 October Phillip Island, Australia
31 October Estoril, Portugal
7 November Ricardo Tormo Circuit, Valencia
