US-60/69 cut the northwest corner of Delaware County, entering just west of the northern terminus of State Highway 85. The routes then cross into Ottawa County, passing through Afton, before US-59 joins the concurrency. Just north of this, US-60 splits off at an interchange which also serves as the third entry to the Will Rogers Turnpike. Near Narcissa, US-59/69 passes the east end of SH-25. US-59 then splits off to follow SH-10 westbound, while SH-10 eastbound follows US-69 into Miami. The two routes concur briefly before splitting near downtown Miami, where US-69 forms a one-way couplet. After reuniting north of downtown, US-69 serves as a major arterial through the city, before leaving town and arcing northeast through North Miami and Commerce. US-69 then spawns U.S. Highway 69 Alternate to Quapaw and Baxter Springs, Kansas. The main route turns north, running through the Tar Creek Superfund site and abandoned community of Picher, before leaving Oklahoma and entering the state of Kansas.