Theres fit and then theres running.
Nothings going too get them into the right fittness without running quarry, BUT a dog should be maintained at a certainly level of fittness (Just say the off season) so that its easyer too getting them back into running fit as leave them off and then trying too run stuff straight away your on the path too injury of over worked slacked tendions soft mucsle ect..
I dont give mine road work as such, As i live right in the middle of now where so its 300yrds to the feilds and just get a few mile free running all yr only thing i do is make sure there nails