There are no towns halfway between a single place.
Lavonia, Georgia, is halfway between those two towns.
Parkton, MD
Assuming you mean what town is halfway between Denver and Galveston. A small town named Childress is halfway, but the closest larger towns are Amarillo or Wichita Falls
There aren't many towns on that whole stretch of I-5. Wasco is the closest to halfway.
Harrisonburg and Staunton, Virginia
Longview TX or Marshall TX
New England, ND
Between Raleigh and Charlotte, NC, several major towns can be found, including Greensboro, High Point, and Salisbury. Greensboro is known for its vibrant arts scene and universities, while High Point is famous for its furniture industry. Salisbury offers a rich history and charming downtown area. These towns are situated along the I-85 corridor, making them easily accessible between the two larger cities.
Philadelphia is the city that is halfway between Washington DC and Boston MA. New York and Baltimore are the other towns that are in between.
Timaru is closest town to halfway between the two towns. It is 167 km from Christchurch and 192 km from Dunedin .
Halfway between Pensacola, FL, and Killeen, TX, lies the town of Vicksburg, MS. Another option is Monroe, LA, which is also approximately equidistant between the two cities. These towns provide convenient stopping points along the route.