You may be limited by the places you shop for it. If you're stuck on garden hose, you may not look beyond the garden department at Lowes.
Here's just one idea: http://www.poolandspapartsdepot.com/waterway-1-1-2-buttress-x-1-1-2-or-1-1-4-hose-400-9280/
There is also the option to rethink the pipe run, and maybe eliminate the hose altogether.
Thanks, I was having trouble understanding what you guys were talking about.