Topeka is at , in north east Kansas. It is at the intersection of I-70 and U.S. Highway 75. It is the start of I-335 which is a part of the Kansas Turnpike running from Topeka to Emporia, Kansas. Topeka is also on U.S. Highway 24 (about 50 miles east of Manhattan, Kansas) and U.S. Highway 40 (about 30 miles west of Lawrence, Kansas). U.S.-40 is coincident with I-70 west from Topeka. The United States Census Bureau says that the city has a total area of . Of that, is land and is water.