According to the card in Fran's baby's cradle, the baby's head is 29 inches around, and her chest is 30 inches. The average newborns' head is 14 inches around; the average adult's head is 22.5 inches. The measurements were most likely in centimeters; 29 cm = 11.4 inches, and 30 cm = 11.8 inches.
When Nick and Tom first meet Ralph, they are headed in opposite directions, but going to the same place. Nick and Tom get into Ralph's truck and head back the way they came from, yet they are all allegedly headed to Nebraska.
When Stu and Glen are on Glen's porch and they hear motorbikes coming, they both jump up, and Glen puts his hat on. In the next shot, when Stu comes down the porch steps, Glen is tangled in the hammock.
When Stu opens of the elevator doors in the CDC, the symbol on the door frame reveals that he's on the second floor. Moments later he goes down two flights of stairs and tries to open the stair entrance to the second floor.
When Larry returns to his mother's home in Queens, he finds her on the floor just inside the door. She is wearing an overcoat when he picks her up and puts her into bed. The tip of her shoulder is visible under the blanket and she is not wearing the jacket. When Larry leaves the bedroom to phone the hospital, she calls his name and sits up abruptly in her bed and is clearly wearing the overcoat. When Larry rushes in, the overcoat is gone again and she is just wearing her nightgown.
Street scenes set in Pratt, Kansas were obviously not filmed there. Pratt has no mid-block crosswalks, and none of the buildings or second stories are authentic. Also, the highway 50 miles west of Pratt has been flat for years, so there should be no downhill scenes.
When the Free Zone Committee meets for the barbecue, blooms are on the trees in the background, a sign of spring. The meeting is supposed to take place in late August, long after the blossoms would've dropped off.
When Trashcan Man reaches Las Vegas, he enters Randall Flagg's base, the Union Plaza Casino. The table he falls asleep on is at the Stardust Casino. He covers the label with his hands, but it's still visible.
The goof items below may give away important plot points.
After Bobby Terry kills Dave Roberts and Judge Farris, he turns Dave's body on its back. Dave's legs are together and his arms are at his sides. When Bobby Terry looks at Judge Farris's body, Dave's legs are apart and his arms are spread out. When Randall Flagg kills Bobby Terry, Dave's arms are back at his sides.