 Schertz is bordered by Cibolo to the east, a narrow strip of San Antonio to the south along Interstate 10, Converse and Randolph AFB to the southwest, Universal City and Selma to the west, Garden Ridge to the north, and New Braunfels to the northeast.Interstate 35 runs through the northern part of the city, with access from exits 174 through 180.I-35 runs southeast to downtown San Antonio and from the northeastern city limits to the center of New Braunfels.