I have just had a look at the satellite version of the map, as the road names meant little to me. Interestingly enough, the chimneys at Richborough Power station have been restored for the purposes of this event, but the real question (especially for officionados of the old Hartsdown Park version of this event) is:
I also did the NDR in trail shoes, which proved to be a mistake. I had fantastic grip on the climbs up through the woods in the first half of the race, but suffered badly when we got onto the road sections in the second half. RTT has road sections at the beginning and end, but most of the rest of it is off-road, and there is a section just after halfway when your speed will be dictated by the runner in front of you who is wearing road shoes (and who keeps falling over). So, trail shoes it will be for me (tied on tightly to avoid issues in the Bog of Doom).