Question: What county seat of Trego County is 21 miles northwest of Cedar Bluff State Park?

Context paragraphs:
Saffold, Georgia: Saffold is an unincorporated community in Early County, Georgia, United States.  Its western boundary is the Chattahoochee River also bordering Gordon, Alabama.  U.S Route 84 and SR 370 pass through the community.  It is the only unincorporated city on U.S Route 84 that is near a smaller city.  It is located 20 miles south of Blakely, 21 miles northeast of Dothan, Alabama, five miles south of the Georgia-Pacific Cedar Springs Operations, and two miles northwest of Jakin.  It is a small unincorporated community near the Alabama state line.  At the Georgia state line, U.S Route 84 starts and ends with Saffold the only unincorporated community on the route.  Georgia State Route 370 is the first and last state route for SR 62 and U.S. Route 84.  In Christmas of 2015, a flood struck Saffold, Gordon, Hilton and Columbia, Alabama.

Round Mountain, Alabama: Round Mountain is an unincorporated community in Cherokee County, Alabama, United States.  For a short period, it was an incorporated community beginning in 1908, and was listed in the 1910 U.S. Census as having 210 residents.  That technically and briefly made it the largest town in Cherokee County, as neither the county seat of Centre nor Cedar Bluff returned census figures.

Ridgway State Park: Ridgway State Park is a state park located in Ouray County, Colorado.  It is the westernmost state park in Colorado.  The park is 21 miles southeast of Montrose, 14 miles northeast of Ouray, it is also 4 miles north of the town of Ridgway and 312 miles southwest of Denver.  The current wildlife consists of deer, coyotes, rabbits, and elk.  Due to the park's variety of animal life, the park is used as a hunting ground although hunting opportunities are extremely limited due to proximity to developed areas.

WaKeeney, Kansas: WaKeeney is a city in and the county seat of Trego County, Kansas, United States.  As of the 2010 census, the city population was 1,862.

Cedar Bluff State Park: Cedar Bluff State Park is a public recreation area located 21 mi southeast of WaKeeney and 23 mi southwest of Ellis in Trego County, Kansas, United States.

Mill Creek Bridge (Clarence, Iowa): Mill Creek Bridge is a historic structure located in a rural area north of Clarence, Iowa, United States. The Cedar Bluff Bridge over the Cedar River was the first all-iron span built in Cedar County in 1877.  Four more iron spans were built later that year, as were several others over the years before this bridge was completed in 1889.  It is the only one of those bridges left, and one of the oldest pony truss bridges in the state of Iowa.  Citizens in Dayton Township petitioned the Cedar County Board of Supervisors in June 1888 for the bridge over Mill Creek.  The supervisors contracted with Ward and Keepers of Clinton, Iowa to design and build the bridge.  The 58 ft span was built on concrete-filled iron cylinder piers, with timber stringer approach spans.  Over the years sub-structural alterations have been made to the bridge.  It has subsequently been abandoned and its deck is in a deteriorating condition.  The bridge was listed on the National Register of Historic Places in 1998.

Cedar Bluff Overlook Park: Cedar Bluff Overlook Park is a recreational park located on a high bluff in the town of Cedar Bluff, Virginia in Tazewell County, Virginia, United States.  The park grounds feature a stepped trail with dramatic views of the town and the Clinch River which winds through the small town of Cedar Bluff, the birthplace of former Virginia Governor George C. Peery.  The park contains three picnic shelters, horseshoe pits, badminton court, restrooms and a playground, as well as parking space for guests.

Double Bluff Beach: on Whidbey Island in the U.S. state of Washington is considered by many to be the best beach on the Southern end of the island, with its offering of shellfish harvest and at times total solitude.  The beach tidelands themselves comprise Double Bluff State Park.  The uplands and access ares are operated by Island County, Washington as Double Bluff County Park and Beach Access.

Echo Bluff State Park: Echo Bluff State Park is a state park under development by the Missouri Department of Natural Resources in Newton Township, Shannon County, Missouri.  The park, located on Sinking Creek, is in close vicinity to Current River State Park.  The park is planned to have a lodge for overnight stays in addition to basic and electric campsites.  The park opened to the public on July 30, 2016.

Cedar Bluff Reservoir: Cedar Bluff Reservoir is a reservoir in Trego County, Kansas, United States.  Built and managed by the U.S. Bureau of Reclamation for irrigation and area water supply, it is also used for flood control and recreation.  Cedar Bluff State Park is located on its shore.

Supporting paragraphs: Cedar Bluff State Park WaKeeney, Kansas
Answer: WaKeeney