Entering Texas from Oklahoma and going west at Texola, take the south frontage road of I-40 into Shamrock, staying on Business 40 as you enter town. Be sure to stop by the famous (and newly restored) U-Drop-Inn which now houses the Shamrock Chamber of Commerce offices, gift shop, and a visitor’s information center.
Welcome to Texas!
Of the 178 miles of Old Route 66 across Texas, approximately 150 miles remain for exploration and enjoyment. Basically, from Texola, Oklahoma to Amarillo, Old 66 is on the south side of I-40, except at McLean. From Amarillo west to the New Mexico line at Glenrio, Old 66 stays to the north of I-40.