Jingle Bell Run - Seattle, WA

Jingle Bell Run - Seattle, WA takes place in Seattle, Washington, on December 13, 2026, with everything starting at 8:30 a.m. Three options are listed: a 12K (about 7.5 miles), a 5K and a one-mile walk. The event is put on by the Arthritis Foundation to raise awareness and funds, and participants are encouraged to show up in holiday outfits.

Running, walking or strolling are all accepted here, so the field spans serious racers and families out for the morning. The 12K is the interesting distance for anyone in training: it asks for more sustained work than a 5K without the recovery cost of a half marathon, and eight weeks of consistent mileage with one weekly tempo run covers it. Get to the start early enough to jog and run a few strides, and keep a spare layer on until the gun.