Nebraska is about 402 to 473 miles from Oklahoma depending on the reference point, and the driving distance is roughly 455 miles. The straight-line distance between Oklahoma and Nebraska is listed as 473 miles , while Rome2Rio shows 402 miles between the states and about 454.5 miles by road.

[1] [9] [5]
Measure Distance
Air distance 473 miles / 761 km
Driving distance About 455 miles
Typical drive time About 7 hours 22 minutes
The exact number changes because “Nebraska” and “Oklahoma” can mean different cities or points inside each state, not just their borders.