It'll be off road so up Doctors Gate, over to Alport Castles, down to Fairholmes for a quick cup of tea, up to Wheel Stones and Moscar top, down to Headstone up to Redmires and possibly down the Mayfield Valley to get up to marathon distance.
Cool, be keen to get gpx of your route as have a few solo city to city training runs shuffles to do for EfM and Sheff -> Mcr is probably the lumpiest/remotest so hardest to route plan.
It'll be off road so up Doctors Gate, over to Alport Castles, down to Fairholmes for a quick cup of tea, up to Wheel Stones and Moscar top, down to Headstone up to Redmires and possibly down the Mayfield Valley to get up to marathon distance.