Neil MaCindoe of Annapolis does this race every year and loves it. Just do it for fun and just to paddle some awesome water if you don’t want to try and win, don’t let the “13” scare you.
“The 13.1 mile race starts at Wye Landing on the Wye East River, 18 miles southeast of the Chesapeake Bay Bridge on Maryland’s Eastern Shore and continues around Wye Island. The race course is over sheltered estuaries with minimum boat traffic and great scenery. ”