Originally Posted by
Doug64
However, we took Highway 20 across Oregon, Southern Idaho and Wyoming;and it gets somewhat warmer and also further between towns. We were also surprised when a place we had planned on picking up water was closed for the 4th of July weekend.
This is the road between Bend and Burns. We hit temps up to 109 F.
Between Boise and Mountain Home was not much better. The only road that goes through this part of the country, and the only freeway of the whole trip( about 65 miles)
Shade was such a novelty we stopped and took a picture of the first tree we'd seen in a couple of days.

We took that same road and I would highly, highly suggest carrying extra water!!! If the temps are normal, you should be able to carry enough water pretty easily, but like Doug mentioned - the temps can soar!! If you happen to hit a heat wave, you'll need lots and lots and lots of water and there won't be any place to get it.
We are now cycling down in Argentina and are having to carry plenty of extra water. We've started strapping on 2- or 3-liter plastic Coke bottles - it works great. That way, we can carry them when we need them, but don't have to stash them away for when we don't need the extra.