Does it have any hills?
Doesn't
2.7 49.7 At ABERGWESYN, R SP TREGARON
Continue for 22Km to TREGARON
include a staircase? And isn't the bit before it the 4 up-chevroned (not at the same time) Newbridge/Beulah rollercoaster?
If so, the answer is, I believe, 'Yes, it does have hills'.