For the first time the Riverwatch triathlon and duathlon reached 1000 entrants.  The races, which serve as the Maryland triathlon and duathlon championships, have become one of the favorite events on the East Coast. All of the top tri and du athletes from the Mid-Atlantic area will be attending with 30 of the 50 states represented. This is the fourth triathlon and third duathlon that Triathlantic has sold out this year.