The event originally scheduled in Jastrebarsko (Croatia) on 7 July has been cancelled.
The 2013 calendars have been updated as follows:
FIM MX3 World Championship
| Date | FMNR | Venue | Country |
| 31 March | KNMV | Valkenswaard | Netherlands |
| 05 May | BMF | Troyan | Bulgaria |
| 26 May | FMU | Belgorod-Dnestrovskiy | Ukraine |
| 09 June | AMZS | Orehova Vas | Slovenia |
| 16 June | FMI | Maggiora | Italy |
| 21 July | FMU | Chernivtsi | Ukraine |
| 04 August | CBM | Macaé City | Brazil |
| 25 August | ACU | Matterley Basin | Great Britain |
| 01 September | ACCR | Pacov | Czech Republic |
| 08 September | SMF | Senkvice | Slovakia |
FIM Women’s Motocross World Championship
| Date | FMNR | Venue | Country |
| 31 March | KNMV | Valkenswaard | Netherlands |
| 09 June | AMZS | Orehova Vas | Slovenia |
| 16 June | FMI | Maggiora | Italy |
| 25 August | ACU | Matterley Basin | Great Britain |
| 01 September | ACCR | Pacov | Czech Republic |
| 08 September | SMF | Senkvice | Slovakia |