At the ninth Pan Pacific Championships in Yokohama, Japan, Coughlin won six medals—four golds and two silvers. Coughlin won one of her gold medals in the women's 100-meter backstroke with a time of 59.72, and another in the women's 100-meter butterfly with a time of 57.88. Coughlin won her third gold medal in the women's 100-meter freestyle with a time of 53.99. She won her fourth gold medal in the women's 4×200-meter freestyle relay with Elizabeth Hill, Diana Munz, and Lindsay Benko. She won her silver medals as a member of the second-place U.S. relay teams in the 4×100-meter freestyle and 4×100-meter medley events.
