3 days in Yellowstone National Park and 3 days in Jackson Hole
OR
3 Days at Glacier National Park and 2 days at Silverwood (a theme park like Knotts but in Northern Idaho)
I'd probably choose 3 Days at Glacier National Park and 2 days at Silverwood. I've been to Yellow Stone and Glacier National Park, and both are beautiful parks to go to. Jackson Hole is another park/ski resort and in September you're more than likely not going to have snow. Silverwood is a theme park which might change up your vacation a little from nothing but nature parks, to national park with nature and beauty and theme park with rides and play. Regardless I'm sure you can find fun in either choices.
I would love to visit a national park every year. We probably have around 10-20 close enough by to visit, but none of them are really well-known.
I am hoping that I can start doing a field trip once per month and visit the national parks that are close to us.
I've never heard of Glacier, but i would love to visit Yellowstone..
Quoting hwblyf:We took a 3 week National Parks adventure last year, and I would pick Glacier over Yellowstone. They're both really cool, though. We tent camped and had some difficulty at the St. Mary campsite in Glacier--almost lost the tent to wind. :(



- BramblePatch
on Feb. 16, 2013 at 11:41 PM