Raton, NM
Mission, South Dakota is roughly halfway between Fargo, North Dakota and Denver, Colorado.
Denver, Colorado is about halfway.
Douglas, WY
denver Colorado
A rough estimate would be Amarillo, Texas.
The halfway point between the cities of Houston, Texas and Denver. Colorado is Wichita Kansas. Each city is about 511 miles away from Wichita.
Des Moines, IA
denver is in colorado
Halfway from Denver, Colorado, to Appomattox, Virginia, is Wright City, Missouri, just west of St. Louis.
Denver, Colorado is the approximate halfway point.
Smeltertown, Colorado is exactly halfway. You could try Denver if you want a bigger city.
The town that marks the exact halfway point is actually Mack, Colorado but a better choice might be Grand Junction, Colorado which is about 23 miles from the exact midpoint.