Cover the 194/294 Washington routes? Both the Nationals and Renowns ran on those routes over time.

Something like meet at Heworth layover stands. Run the 294 route to Success (old Shiney Row College), a run to Easington Lane (or Hetton), and then the 194 back over to Heworth? Plenty room for photo stops along the route.

Whilst I appreciate that not every preservationist may be able to carry passengers on their vehicles, it'd be a nice idea if there were some 'guests' to the NNRG running day too? It worked well last year, with WHTT and Yesterbus both providing a National.