As described in the updated, expanded 2022 book Drive-Ins of Route 66, now available in paperback and Kindle versions, there were 116 drive-ins within three miles of Route 66 when it was active.
Here is a list of those drive-ins, plus two more (in parentheses) that were erroneously included in the book's first edition.
For more details on these drive-ins, plus more stories of Route 66, check out Drive-Ins of Route 66, now available in paperback and Kindle versions.