bdecker wrote:
Just remember the first full week of August is the official time for the Black Hills Motorcycle Rally. The whole area you're vacationing in will be busy during that time.
+1 on this. The dates are August 3-9. Also keep in mind that this is the 75th Anniversary of the Sturgis Motorcycle Rally, and the expectations are that the crowds will be the largest ever. Pretty much all of the campgrounds/RV parks/resorts will be filling up quick, and the prices will likely be a premium.
Also, 2 weeks to do both is really pushing it. On you searches here, you will find many recommendations/comments to allow for extra time when trying to do both. Also factor in your travel time from Houston north, how many days of actual travel you'll be doing to get to your first destination.
Another vote for Rafter J Bar as a place to stay in the Black Hills.
Here's a MapQuest link that shows what is probably the best route. I've done bits and pieces of this, notably from Oklahoma north, and it's a good route at least from that point north. Once you get to Nebraska, going from I-80 north on US 26 and US 385 is a good drive, roadway is good, not overly taxing. You'll also go through the Nebraska State Forest, which is a bit of a surprise to encounter on the High Plains.
Houston to Black Hills