2026 Theme: Revolution, Reaction, Reform in History
| Tuesday, September 9, 2025 | Riverside County History Day District Coordinator Orientation Zoom l 4:00 p.m. |
| Friday, February 13, 2026 |
Registration Deadline |
| Monday, March 2, 2026 | Projects due in zFairs |
| Saturday, March 14, 2026 |
Riverside County History Day Competition |
| Friday-Sunday, May 1-3, 2026 | National History Day - California State Contest CSU Sacramento |
| TBD | National History Day Contest TBD |