Western Nebraska.
That would place you in the area of Wets Plains, Missouri - according to Google Earth.
Hicoria, Florida is the halfway point between Largo, Florida and Boca Raton, Florida. There is approximately 251 miles between Largo and Boca Raton.
Lincoln in Nebraska
The halfway point between Savannah, Georgia and Lessburg, Florida is in Jacksonville, Florida.
The halfway point between Tampa Florida and Augusta Georgia falls in or around Yulee, Florida.
The halfway point between Blountstown, Florida and Little Rock, Arkansas is in Eldridge, Alabama.
The halfway point between Bartow, Florida and Greenville, South Carolina falls in Townsend, Georgia.
The halfway point between Tampa and Palm Beach Gardens falls in Okeechobee, Florida.
The halfway point between Wheeling, West Virginia and Brooksville, Florida is Devils Cross Roads, SC.
One halfway point between Middleton, WI and Cocoa Beach, Florida is Shorewood, TN.
davenport