Monster Mash 5k

Join us for a spooktacular time at the Monster Mash 5K in Issaquah, King on October 25th, 2025! Whether you're an experienced runner or out for a festive day with loved ones, this thrilling event caters to all ages. Embrace the Halloween spirit, stay active, and enjoy a fun-filled day of fitness and community spirit at the Monster Mash 5K. Don't miss this exciting opportunity to get your heart racing in a picturesque setting.