Just noticed this Strongman run thingy is on Sat/Sun whilst we're out there.
24km assault course
http://www.nuerburgring.de/en/events...ongmanrun.html
No idea of the route but assume as there's still two full days of TF that it doesn't go anywhere near the Nordschleife...
edit/ found this:
Looks like it might close the back way to the Ring at least (where we go right at Kelberg roundabout and through the villages rather than straight on past Lidl)