Well, I'm back from sunny Doncaster. My hotel was about three miles away from Cusworth Hall so I ran there via Sprotbrough. I passed three runners on the way, one was a madman dressed in black who was doing hill sessions on a cliff face that I barely managed to stagger back up at the end!
Cusworth Hall itself was a fantastic setting for a run (and worthy of a RW Rave Run picture). From the hall at the top of the hill it was possible to look out miles across farmland and city, from the lake at the bottom I had an excellent view of the sun setting over the hall. I passed six runners who were all enjoying the fine summer evening. Two laps of the grounds worked out at about two miles and then I headed back to the hotel.
Many thanks to barnsleyrunner for the suggestion.
The rest of you should head up the M18 and sample the delights of the metropolis :-)
I will be back there next month and have picked out a good route alongside the river/canal running through Sprotbrough.