150 miles taking this route:
The address of the Mccook Nebraska Us Army Air Base Historical Society is: Po Box B-29, Mccook, NE 69001-6900
The address of the Mc Cook Art Guild is: 209 Norris Ave, Mccook, NE 69001
Hays, KS is roughly the halfway point. You should be able to reach Hays, form Denver on one tank of gas. Hays to Columbia is doable, but it might get tight. Hays is roughly 340 miles from Denver. From Hays to Columbia is roughly 390 miles.
The address of the Senator George William Norris House is: 706 Norris Ave, Mccook, NE 69001
The total driving distance from Omaha, NE to Lawrence, KS is 207 miles.
Concordia MO
It is approximately 560 miles away.
AnswerMilligan, NE
St. Charles, Missouri is a good halfway point; just west of St. Louis.
The distance between the starting point and the destination is 190mi, (307km), and with reasonable traffic conditions it will take approximately 4 hours 30 minutes of driving time.
It is 302 miles according to Google Maps.
It is 135 miles according to Google Maps