Saturday’s 7.8 km was largely inside the National Museum of the U.S. Air Force in Dayton, Ohio. Nothing Mars-related there I can think of — the Air Force doesn’t seem to be much interested in other planets, yet — though they did have unflown Mercury and Gemini capsules and the (flown!) Apollo 15 command module. (They also have a Space Shuttle trainer and a mockup of the Shuttle cargo bay, but those are off exhibit.) Sunday was mostly spent driving back to Syracuse, hence very little walking distance that day.
The week ended, more or less by happenstance, with three notable MarsWalk days in a row. On Wednesday I crossed the 300 km mark. Thursday ended at 306.4 km, just over 10% of the way from Viking 2 to MSL.*
As for today, I said “more or less” because I did walk further than I otherwise would have in order to make sure I reached the 314 km point, at which I made my closest approach, 14.7 km, to an officially named feature: Raub Crater. It is, like Rimac, named for a “small [town or station] of the space program, chosen on an international basis”, this one in Malaysia — though what Raub’s connection with space exploration is, I have no idea. The crater’s 7.1 km in diameter and, well, it’s a crater.
MarsWalk kmz file (for Google Earth — View >> Explore >> Mars)