A couple weeks ago, I took a 1-day mediabistro class on Breaking Into Travel Writing. The instructor, Jay Cooke, was interesting and informative. He had good recommedations on how to generate ideas, unexpected markets, and how to structure the business of freelance travel writing. I'd definitely recommend taking one of his courses.
The Ozark Sentinel in Branson, Missouri, is looking for a weekly travel columnist, to write about Missouri and the surrounding states.
Nylonmag.com is looking to publish more travel stories in its Culture Department.