Iowa Highway 210 (IA 210) is an east–west state highway located in central Iowa. Spanning approximately 35 miles (56 kilometers), the route serves as a connector between several small communities in Dallas, Boone, and Story counties, situated north of the Des Moines metropolitan area.
The highway begins at its western terminus at an intersection with Iowa Highway 141 near Woodward. Traveling eastward, the route crosses the Des Moines River and enters the city of Madrid, where it intersects Iowa Highway 17. The highway continues east into Story County, passing through the town of Slater and intersecting U.S. Highway 169.
Further east, Iowa Highway 210 features a diamond interchange with Interstate 35. Beyond the interstate, the route continues through the communities of Maxwell and Collins. The highway reaches its eastern terminus at an intersection with U.S. Highway 65, located shortly after passing through Collins.
Iowa Highway 210 primarily traverses rural and agricultural landscapes. It is maintained by the Iowa Department of Transportation (IDOT). The route provides a secondary east–west link between major north–south corridors, including Iowa Highway 17, U.S. Highway 169, Interstate 35, and U.S. Highway 65.