The 2026 Spring Mack Days concluded on May 9, totaling 37,975 lake trout entries. Kolton Turner emerged as the top angler, while fostering conservation and community spirit throughout the event.

The 2026 Spring Mack Days at Flathead Lake is thriving, with over 35,000 lake trout entries amid excellent weather. The event concludes on May 9, highlighting a $10,000 “Chase” fish prize.

The Confederated Salish and Kootenai Tribes report a successful week six of the 2026 Spring Mack Days Fishing Event, with 25,839 fish turned in and only three weeks remaining until the May 9th conclusion.

The 2026 Spring Mack Days Fishing Event on Flathead Lake highlights angler participation in lake trout conservation, with daily catches peaking at 1,680 and notable tagged fish prizes. Event runs until May 9th.

Mack Days returns to Flathead Lake March 12–May 9, 2026, giving anglers nine weeks to target non-native lake trout while supporting conservation of native bull trout and westslope cutthroat. Get the key dates, prize details, entry rules, fish drop-off locations, and important release and fish ID requirements.