You would probably travel through South Dakota, Nebraska and Kansas before entering Oklahoma.
However, if you want to travel by Interstate, you would travel through South Dakota, Iowa, Missouri, and Kansas before entering Oklahoma.
It would be helpful to have more information but if you are asking what state number North Dakota and Oklahoma are:
North Dakota is listed as state number 39 although it is not known which one was signed first, North Dakota or South Dakota.
Oklahoma is state number 46.
There are no US States located north of North Dakota. There are the two Canadian Provinces of Saskatchewan and Manitoba.
South Dakota, Nebraska and Kansas are between North Dakota and Oklahoma.
* South Dakota * Nebraska * Kansas
Minnesota is between Wisconsin and North Dakota.
Red River
North Dakota and South Dakota
Montana is the only state which borders western North Dakota.
North Dakota, South Dakota, Wyoming, and Idaho are the four states which border the US state of Montana.
South Dakota
North Dakota, South Dakota, Iowa, Wisconsin
North Dakota and South Dakota are bordered by Minnesota, Iowa, Nebraska, Wyoming, and Montana.
Only North Dakota shares a border with Canada.
North Dakota shares a border with Canada. Both the Canadian Provinces of Saskatchewan and Manitoba share borders with North Dakota.
Minnesota is bordered by North Dakota, South Dakota, Iowa, and Wisconsin.
Fargo is the capital of North Dakota; the state shares a border with Canada. Indian tribes in North Dakota include the Chippewa and Sioux.
North Dakota shares its northern border with Saskatchewan and Manitoba, Canada.
Minnesota is the state which is east of both North Dakota and South Dakota. Minnesota shares its western border with North Dakota and South Dakota. Minnesota is bordered on the south by Iowa and on the east by Wisconsin and Michigan. Minnesota is bordered on the north by the Canadian provinces of Manitoba and Ontario.