The calendar of the 2009 FIM MX3 Motocross World Championship, starting on April 12 at Hawkstone Park (Great Britain), will be subjected to the following changes. The round scheduled on May 10 in Alhama de Murcia, Spain, is cancelled. The round scheduled on June 7 in Faenza, Italy, is replaced by Holice, Czech Republic. The round scheduled on June 14 in Bulgaria will take place in Troyan (instead of Samokov). Finally, the round scheduled on July 5 in Holice, Czech Republic, is replaced by Faenza, Italy.
The updated calendar is the following (changes in bold):
| DATE | COUNTRY | VENUE | CONTINENTAL CHAMPIONSHIP |
| 12 April | GREAT BRITAIN | Hawkstone Park | EMX2 UEM |
| 19 April | SPAIN | Talavera de la Reina | EMX2 UEM |
| 03 May | PORTUGAL | Cortelha | EMX2 UEM |
| 24 May | CHILE | Laguna Caren | MX2 ULM |
| 07 June | CZECH REPUBLIC | Holice | EMX2 UEM
|
| 14 June | BULGARIA | Troyan | EMX2 UEM |
| 21 June | THE NETHERLANDS | Markelo | EMX2 UEM |
| 05 July | ITALY | Faenza | EMX2 UEM |
| 12 July | SLOVENIA | Orehova Vas | EMX2 UEM |
| 19 July | CROATIA | Mladina | EMX2 UEM |
| 02 August | GERMANY | Schwedt | EMX2 UEM |
| 09 August | FRANCE | Lacapelle Marival | EMX2 UEM |
| 23 August | FINLAND | Vantaa | EMX2 UEM |
| 30 August | DENMARK | Randers | EMX2 UEM |
| 13 September | FRANCE | Villars sous Ecot | EMX2 UEM
|