The short version is that Arizona had distance on its side, and then it had one stubborn barber.
The road the interstate tried to replace
When Interstate 40 replaced Route 66 across northern Arizona, town after town lost its traffic in a day. Seligman was bypassed on September 22, 1978, and its barber, Angel Delgadillo, born in Seligman in 1927, watched the cars simply stop coming. Williams was the last town on all of Route 66 to be bypassed, in 1984. That late date is why its main street still feels intact instead of reconstructed. Verdict: read the dates as you drive. The towns that kept the most are mostly the ones bypassed last, or saved first.
Seligman and the comeback
Delgadillo and other locals formed the Historic Route 66 Association of Arizona in 1987, and that same year Arizona designated the Seligman to Kingman stretch as Historic Route 66. Other states followed with associations of their own. Today his old barber shop on the main street in Seligman runs as Angel and Vilma Delgadillo’s Original Route 66 Gift Shop and visitor center, and Seligman calls itself, with a real claim, the Birthplace of Historic Route 66. The story also fed into Pixar’s Cars, whose fictional Radiator Springs owes a lot to towns exactly like this one. Verdict: Seligman is not a photo stop. It is the reason the rest of this page exists. Give it an hour, minimum.
Why go this year
A centennial only happens once, and Arizona towns have spent 2026 marking it with car shows, exhibits and small town celebrations up and down the road. Expect the birthday week around November 11 to be the busiest and most festive stretch of the year, especially in Seligman, Kingman and Flagstaff. That cuts both ways. You get the road at its most alive, and you share its two lane miles with a lot of other people who had the same idea. Book the characterful rooms, the Wigwam Motel in Holbrook and La Posada in Winslow, well ahead for that week. Verdict: go in the birthday week for the party, or in late October for the same weather with thinner crowds. Both are good calls.

