The Difficult Bend is a stretch of railway line located near Kellsthorpe.
Thomas had trouble going through it in the past, but Annie and Clarabel helped him out by encouraging him to be careful. However, he had to take regular coaches through the bend while Annie and Clarabel were being repaired and they were not around to give him support. Because he was worrying so much, he came off the tracks and crashed into the bushes. Thomas later overcame his fear when Edward's runaway train was going to crash into the new station, Kellsthorpe Road.