On December 1, key roadways including Interstate 5, State Route 99, and State Route 520 will undergo lane and ramp closures due to the 2024 University of Washington Medicine Seattle Marathon. The closures will start in the early morning hours, aiming to facilitate the safe passage of participants and spectators. Traffic disruptions are anticipated, particularly for commuters in Lynnwood and surrounding areas, making it essential for drivers to plan their routes accordingly. Local transportation agencies will provide updates and detailed information about the affected areas. The marathon is expected to attract thousands of runners and fans, adding to the complexity of local traffic patterns on that day.

Residents are urged to stay informed and adjust their travel plans to minimize inconvenience. This event underscores the importance of community engagement in local activities, while also highlighting the need for efficient traffic management. Awareness of these closures will help ensure a smoother experience for both marathon participants and everyday travelers.