Their geographic range extends from southern Maine to northern Georgia and westward to central Kentucky and eastern Ohio.

At the southern end of its range, it overlaps with Coluber constrictor priapus, the southern black racer, and at the westward end it overlaps with Coluber constrictor flaviventris, the eastern yellow-bellied racer.

[6] Upon hatching, the juveniles tend to have dark gray to reddish-brown dorsal patterns with a light gray to brown body that becomes occluded with age and the melanin becoming so abundant that all but the pale chin and brown snout are obscured.

The Northern black racer will seek refuge under objects like logs, rocks, and other debris during the night or on cool days.

[6] Upon reaching sexual maturity, C. c. constrictor begins migrating to grasslands that support adult mating opportunities that occurs from April to October, with an unimodal or one peak during the late spring to early summer periods.