There's a lovely trail around Pitsford Reservoir that's 8ish miles around. It's about 4 miles up the A508 from Northampton. Probably a bit boggy after all the recent rain though, so maybe one to leave for spring!
The Brampton Valley Way is one of my favourites, and at 15 miles each way it should be long enough! The section that starts in Northampton was closed a while ago and I don't know if it's been reopened yet (that section passes under the train line) - probably best to start at Brampton Lane if you begin at the Northampton end.
Hi all, can I join in? I'm going to be following the up to 55 plan for Clarendon in October. Was supposed to be my second one, but fell down the stairs while training for Milton Keynes Very not an advanced runner, must just be a masochist!