- Southern Terminus:
- Erie Boulevard (NY 5) in Syracuse
- Northern Terminus:
- NY 298 and New York Thruway (I-90) in East Syracuse
- 2.29 miles
Thompson Road is a north/south route from Syracuse to East Syracuse. It takes on the NY 635 designation at its intersection with Erie Boulevard (NY 5) in Syracuse and runs north, crossing and having an interchange with I-690. After a couple of miles, it reaches Carrier Circle, a traffic circle with exit numbers along NY 298 from which there is also access to the New York Thruway (I-90). NY 635 ends here, but Thompson Road continues north of the circle for as a local street.