Each twist and turn, each grind and coast...
The way out:
Day 1: Cardiff to Swindon (145km with 950m ascent)
Day 2: Swindon to St Albans (137km with 710m ascent)
Day 3: St Albans to Epping section (39km with 330m ascent)
Day 3: Epping to Harwich section (111km with 600m ascent)
Day 4: Hoek van Holland to Nieuwegein (90km with 270m ascent)
Day 5: Nieuwegein to Amsterdam (74km with 260m ascent)
The return:
Day 1: Amsterdam to Hoek van Holland (105km with 430m ascent)
Day 2: Harwich to High Wycombe (190km with 1470m ascent)