Usually when you hear jingle bells, it's because Santa's sleigh has alighted on your rooftop. But at the Jingle Bell Run/Walk for Arthritis, it's because hundreds of runners have tied them to their shoelaces. This themed 5K fun run encourages participants to don their best holiday apparel, whether that's an elf costume or their ugliest Christmas sweater. The race takes place across the country, and a portion of the proceeds benefits the Arthritis Foundation.