Bay Bridge Run - Visit Annapolis The Bay Bridge Run is a 10K race that traverses the eastbound span of the bridge from Anne Arundel County to Kent Island in Queen Anne's County and finishes with a huge post-race party! Once a year, the bridge shuts down traffic on the eastbound span for a race that tests your mettle and perhaps your fear of heights! The views and photo ops abound and this race is bringing in race enthusiasts ...