Charlotte - Michael Phelps will relocate to Tempe, Arizona, to continue training under longtime coach Bob Bowman.
Phelps lives and trains in Baltimore. He is making the move after Bowman was hired as the men's and women's swimming coach at Arizona State University.
"It's going to be different," Phelps said on Thursday as he prepared to compete in Charlotte this weekend.
"I get my Vitamin D year round, which is nice.
"I get to be tan all year, which is also nice. But I'm somebody who loves changes.
"If we do the same thing in training month after month, I get sick of it."
Under Bowman's tutelage, Phelps became the Olympics' most decorated athlete, with 22 total medals and 18 golds.
After coming off a six-month suspension levied by USA Swimming, he is training for the Rio de Janeiro Games next year.
This is Bowman's second stint as a college coach. He led the University of Michigan's program from 2005-08, while also coaching Phelps.