My favorite type of tour is self supported self guided and self poaced.
Granted I do own almost every map that Adventure cycle sells.
I plan my trip based upon the weather and if I have been there before or not.
Most of my trips are 3 - 5 days in length. I find it difficult to schedule more time off.
I don't like group rides. It seems that if they are credit carding it, they stay in nice hotels/motels. My cup of tea is a cheap motel or city park with a shower.
When I started touring, I figured out that my 3-4 person top of the line tent would be paid for in less than a week of camping.
My usual day has been between 15 and 75 miles. The distance depends upon the road, and what is along side of that road.
On one trip down the Natchez trace, we only went 15 miles because the town we stopped to visit was so interesting.
So, I prefer to go my own pace. I like to stop when I want to stop. Camping gives my many alternatives I would not have on a group ride with an agenda.
My pace? 8 - 12 MPH. Sometime faster, often slower. My bike is very heavy loaded. I carry a table, chair, tent, sleeping bag, water filter, air mattress, lots of water, food, clothing, books to read, journals to write in, camera, etc, etc.
The slowest day was 4.2 miles which took five HOURS. This was the climb out of Silverton towards Durango. next time, I will ride the other way. The winds come out of the South on that highway. Still, it was a memorable trip.