Bring your four-legged friend to this Eugene celebration where thousands of dogs and their humans lace up together for distances ranging from 2K to 10K, with a solo-friendly "Fast Furless 5K" option—all to help animals in need. You'll find plenty to do beyond the run, including vendor booths, dog activities, fun contests, and prizes for participants of all ages, making it perfect for families and seniors. Registration is $35 for adults and $25 for seniors if you sign up early, with kids under 12 running free, though costs go up $5 if you register on race day.