Lumen Field
- Rounds
- 18
- Seasons
- 18
- First
- 2005
- Latest
- 2026
Every Round
| Season | Date | Race | 450 Winner | 250 Winner |
|---|---|---|---|---|
| 2027 | Mar 20 | Seattle SX R11 | Upcoming | |
| 2026 | Feb 14 | Seattle SX R6 | Eli Tomac | Haiden Deegan |
| 2025 | Mar 29 | Seattle SX R11 | Cooper Webb | Cole Davies |
| 2024 | Mar 23 | Seattle SX R11 | Cooper Webb | Levi Kitchen |
| 2023 | Mar 25 | Seattle SX R11 | Eli Tomac | Jett Lawrence |
| 2022 | Mar 26 | Seattle SX R12 | — | — |
| 2019 | Mar 23 | Seattle SX R12 | — | — |
| 2018 | Apr 7 | Seattle SX R13 | — | — |
| 2017 | Apr 8 | Seattle SX R14 | — | — |
| 2014 | Apr 12 | Seattle SX R15 | — | — |
| 2013 | Apr 20 | Seattle SX R15 | — | — |
| 2012 | Apr 21 | Seattle SX R15 | — | — |
| 2011 | Apr 16 | Seattle SX R15 | — | — |
| 2010 | Apr 24 | Seattle SX R15 | — | — |
| 2009 | Apr 18 | Seattle SX R15 | — | — |
| 2008 | Apr 26 | Seattle SX R16 | — | — |
| 2007 | Apr 28 | Seattle SX R15 | — | — |
| 2006 | Apr 29 | Seattle SX R15 | — | — |
| 2005 | Apr 23 | Seattle SX R14 | — | — |