Sandy Armstrong has been with Marin Rowing as the  Junior Women's Head Coach & Executive Director for the past 35 years.

In 2013 Armstrong was named "US Rowing Women of the Year – Ernestine Bayer Award" for her contributions to women’s rowing. She has spent time as the coach and manager for the Junior Women's National Team, bringing home one bronze (2011) and one silver (2012) medal in the Jr. Women's 8+. Under her tenure at Marin, her crews have brought home multiple medals from both the Youth National and the Regional Championships. Coach Armstrong chairs the US Rowing Junior High Performance Committee and currently sits on the SW Regional Rowing Board of Stewards, a position she has held since 1994. As Executive Director, Armstrong has led the Marin Rowing Association to perform consistently over the decades.