Not easy to explain how they have put the extra miles in, but you come back and do part of the big loop again. You are welcome to the miles though! 26 miles are enough for me on that terrain! Make full use of Hunters Inn, it is a great pub!
I ran in road shoes GeeeM and only regretted it a little bit About 90% is OK for roads shoes but the 10% is pretty slippery and in places where you do not want to be slipping about! Tough call really, if it continues to be wet then trail shoes are a must! I have not done the short loop recently but it is going to be muddy! If I was not doing the Bideford half on Sunday I would love to have joined you
Hope the weather is kind, if there is anything I can help with let me know, I live a few miles away... but you are welcome to the Minehead and back bit, scenery is amazing though!