Prepare for a spooktacular Halloween celebration at the annual Trick or Treat 5K, set to haunt the scenic Green Lake Park in Seattle, WA, on October 31, 2026. This festive 5K run or walk offers a ghoulishly good time for participants of all ages and fitness levels. As you race through the picturesque park, expect typical race day conditions around 57°F for highs and 43°F for lows, with about a 21% chance of precipitation, creating that perfect atmospheric fall run.
The Trick or Treat 5K course winds along the roads of beautiful Green Lake Park, featuring a road course with some gentle hills that provide a pleasant challenge and engaging scenery for runners and walkers alike. Renowned for its community spirit and festive cheer, this event encourages participants to embrace the Halloween theme by donning their favorite costumes. The course is welcoming to everyone, from seasoned runners aiming for a personal best to families enjoying a leisurely stroll; leashed dogs and strollers are also welcome, though some narrower sections of the trail should be noted.
What truly sets the Trick or Treat 5K apart is its lively Halloween atmosphere, making it a beloved annual tradition. Participants can immerse themselves in the holiday spirit, with free kid's entries available for the untimed race (without bib or medal) ensuring fun for the youngest ghouls and goblins. While specific aid station details for this event are not extensively highlighted in general race information, the overall focus is on a supportive and fun environment. Join hundreds of fellow Halloween enthusiasts for a memorable experience filled with frightful fun and community engagement at this signature Seattle event.
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