Not really. The only short flights I do, are usually leaving from KNKX and flying around for a while, then returning to KNKX.

Just load the B-52 Cleared for takeoff (KNKX) and pick a destination of your choice. The range of the B-52 is good, I have done 5000nm round trips in it with fuel to spare.
If you want to simulate taking bombs and a reduced fuel load, then you cant go as far, but you can add more fuel later (pretending that you met a tanker to do in-flight refueling.