2021 Schedule. These dates are subject to change. « All Events Sierra National – Oatfield MX April 22 - April 23 « DT1 MX Park – Valley vs South Series Rd 5 2X MX Park (Porterville OHV) – Double Points Race » + Google Calendar+ Add to iCalendar Details Start: April 22 End: April 23 Organizer Sierra OTHG Website: http://www.sierraothg.com/ Venue Oatfield Mx 12801 Looney Rd Snelling, CA 95369 United States + Google Map Printable Schedule – Click Here