The 3-year-old goldendoodle apparently joined runners at mile five of the marathon in Howard County on May 15. Runners reported seeing him at several points along the race, and there's video of him crossing the finish line at 2 hours and 14 minutes. He then found his way home.
Race officials later honored him with a medal. Video of him crossing the finish line has been viewed thousands of times on YouTube. Though he was a late entrant, Dozer's family set up a fundraising page to benefit the race's beneficiary, the University of Maryland's Greenebaum Cancer Center. Dozer's raised more than $13,000. He also has a fan page on Facebook.