Starting in Bletchley, we take a pleasant stroll along the canal and then through lovely English countryside to the pretty village of Woburn, where we stop for lunch (shops and cafés aplenty). Thence to Woburn Abbey, where Queen Eleanor's bier was kept overnight, through the deer park and then along footpaths parallel to the original 1290 route, to reach Dunstable. There, you can either rest at The Gary Cooper (Wetherspoons) or hop on a bus to Luton and onward via train to London.
You can use the interactive controls to zoom in and out and to move around the map, or click on a marker for more info. (interactive map help)