Route: Bedford Green Wheel (United Kingdom)

Bedford Green Wheel is a roughly circular route around Bedford, primarily designed for walking and cycling and to provide access to green spaces and recreational areas. A nice local test piece, and good marathon training.

https://www.bedford.gov.uk/leisure-and-culture/parks-and-open-spaces/bedford-green-wheel/ 

Map here: http://www.travelbedford.co.uk/ajax-content/Bedford_Cycle_Map-Map_Side.pdf