Youthstream secara resmi sudah mengeluarkan jadwak sementara untuk MXGP tahun 2018. Ada sedikit perubahan, seri perdana akan langsung diadakan di Argentina. Rusia dan Indonesia akan kembali menggelar MXGP. Rusia akan menggelar seri ke 5 sedangkan Indonesia akan menggelar seri ke 11 setelah Italy. Tanggal dan tempat baru direncanakan untuk MXGP of Indonesia. Palembang akan jadi venue baru dan direncanakan akan digelar pada tanggal 8 juli 2018.
| DATE | GRAND PRIX | VENUE | ADDITIONAL RACES |
| 4 March | PATAGONIA – ARGENTINA | Neuquen | |
| 25 March | SPAIN | Red Sand | EMX250, EMX300 |
| 8 April | TRENTINO (I) | Pietramurata | EMX125, Women |
| 15 April | EUROPE (NL) | Valkenswaard | EMX125, EMX250 |
| 29 April | RUSSIA | Orlyonok | EMX250, EMX300 |
| 13 May | LATVIA | Kegums | EMX125, EMX250 |
| 20 May | GERMANY | Teutschenthal | EMX125, EMX300 |
| 3 June | GREAT BRITAIN | Matterley Basin | EMX250, EMX300, Women |
| 10 June | FRANCE | St Jean d’Angély | EMX125, EMX250, Women |
| 24 June | ITALY | tba | EMX250, EMX300 |
| 8 July | INDONESIA | Palembang | |
| 22 July | CZECH REP. | Loket | EMX65, EMX85, Women |
| 5 August | BELGIUM | Lommel | EMX125, EMX250, EMX300 |
| 12 August | SWITZERLAND | Frauenfeld/Gachnang | EMX125, EMX250 |
| 19 August | SWEDEN | Uddevalla | EMX125, EMX250 |
| 2 September | MONSTER ENERGY MXGP OF USA | Gatorback Park | |
| 9 September | LEON – MEXICO | Leon | |
| 23 September | THE NETHERLANDS | Assen | Women, Veteran |
| 30 September | IMOLA (I) | Imola | EMX125, EMX250, Women |
| 7 October – Monster Energy FIM Motocross of Nations – USA, tba | |||
