I live in Canada, and don't know the US that well other than my bussiness and personal travels there.
My personal choice, if it had to be in the US would be some place in the North West US. There are some very good Universities in Oregon and Washington. The training options in both states are great and there is also good access to great skiing in winter, if that is important. Travelling around this area, I don't get the feeling that the Northwest has been sub-divisoned, strip-malled and big-boxed and super-highwayed to death as have many other places that I have been to in the US.
In Canada, you could not go wrong with Victoria, BC and the University of Victoria. Great school, and Victoria, is home to remarkable number of top endurance athletes such as triathletes Peter Reid, Simon Whitfield, Greg Bennet, Lori Bowden and others. Top Xterra triathlete Melanie McQuaid. Two time 4th place Olympic marathoner Jon Brown. Top Mountain bikers, Roland Green and Alyson Sydor, Many top ranked rowers and I have only scratched the surface.
On the mainland the University of British Columbia( UBC) is a very good school, and Vancouver is also a great place to train - awesome trail running right in the city and the worlds largest outdoor pool - 135 m long. UBC also has a nude beach right on campus!
Steve Fleck @stevefleck | Blog