Our Coaches

Marc Oria, PH.D.

Head Coach

Marc was born and grew up in Barcelona, Spain. He began rowing at the age of 8 at the Reial Club Maritim de Barcelona. He earned numerous medals at regional and national championships and rowed on the Catalunya and Spanish National Teams from 1998-2007. Marc began his coaching career in 2001 as an instructor, then director and head coach at the Reial Club Maritim de Barcelona until 2008. His resume includes experience as a Catalunya National Team coach (2006). Several of his athletes medaled at the World Rowing Junior Championships and the World Rowing Championships, while some went on to become finalists at the 2016 Olympic Games.  Marc and his family moved to Cincinnati in 2013, where he served as assistant coach for the University of Cincinnati varsity women’s team (2016) and as a varsity women’s head coach (2017-19). Marc holds the USRowing Level 3 Coaching certification, which is the highest rowing coach designation.  
Marc is a neuroscientist at Cincinnati Children’s Hospital where he is a leading expert in congenital malformations.  


Avery Riekert

 Novice Coach

Avery Riekert joined Great Miami Crew as a freshman after she attended an information meeting at Mason High School. She fell in love with rowing and the family-like environment of the team. She rowed for a year and a half before a health condition made her shift her attention to peer coaching and occasional coxing. In 2018, Avery became a Level 2 US Rowing certified coach. In 2020, she joined the team as an assistant coach after graduating high school. She currently attends the University of Cincinnati studying Psychology on a pre-law track, and plans to become an attorney.


Corey Lach

Masters Coach

Corey Lach began his rowing career at St. Francis de Sales High School in Toledo, OH. Corey then went on to row for 3 years with the Ohio State Crew Club as a lightweight. During the summers while enrolled at Ohio State, Corey also coached Learn to Row and Recreational Masters practices at Greater Columbus Rowing Association on Griggs Reservoir. After a five-year break from rowing, Corey is now sharing Masters coaching duties on the Great Miami with Kristina. Corey especially enjoys teaching brand new rowers the fundamentals of the sport as well as acting as the coxswain for the Masters boats during regattas. He is excited to share the enjoyment of rowing with anyone who will join GMRC on the river.


Kristina Latta-Landefeld

Masters Coach

Kristina Latta-Landefeld started her rowing career at St. Ursula Academy in Toledo, OH, and continued on at Smith College in Northampton, MA. She rowed for New York Athletic Club during the summers and after college. Her rowing career includes stints as a collegiate coach, boat repair person, cross-country boat trailer driver, and community rowing club administrator. Kristina is passionate about getting people engaged on or near the Great Miami River through rowing and other recreational means to find a sense of empowerment, peace, and team.